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Chemistry Lecture 1 For General Chemistry and Inorganic Chemistry — Transcript

by Jan Bernel Padolina · 5,968 words · 1,115 segments · language en · Watch on YouTube

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0:02Okay. Uh chapter one, introduction to
0:04chemistry. Okay.
0:08So class welcome to this uh course no so
0:12let me ask first no what is chemistry
0:16why is there a need for you to study
0:18chemistry since you guys are psych
0:21student?
0:23H sige nga.
0:28Anyone? Anyone?
0:34Sige you can you can uh answer yung
0:36naka-raise ng hand. Sige po. An pa antw
0:40po? Good afternoon. I think yung
0:42relevance po ng chemistry in general sa
0:45brain chemistry po sa psychology and
0:47then sa neurons po kasi sa action
0:50potential before po siya mag-release sa
0:51action through the terminal sa terminal
0:54buttons meron pong chemical and electr
0:57something na nangyayari before mag-push
0:59through iyung actions all throughout the
1:01body kaya po relevant iyung chemistry sa
1:03psychic po. Mm. So you're referring to
1:06brain chemistry no? So uh in our brain
1:10uh there are chemical signals no there
1:14are messengers no hormones there are uh
1:18molecules that affects no how we
1:20interpret things pwede no okay o sige ah
1:24sorry sino ulit yung nag ah recite type
1:28ka naman ng ano type ka naman ng sa chat
1:31ng recitation
1:33ayan yung isa Ha?
1:39Sige. Sino 'yun? Miss 'yung female
1:43sa chat. Sa lagay mo yung word na
1:45recitation. Ayan. Okay. I would react to
1:49it. Okay. I would read this uh answer
1:52no. Ah significant to the study Jenkem
1:55for us to have general knowledge in
1:57regards growing recognition of science.
2:01Okay. Mental process. Okay. Sige. So,
2:05sino pang gusto mag-recite? What about
2:07Lida? Sige. Tama ba? Did I pronounce it
2:10correctly?
2:11Leida.
2:14>> Good afternoon po, sir.
2:16Mm.
2:17>> Uh for me po, I believe na psych
2:21students uh should study um chemistry
2:24because um as we all know, po, we treat
2:27patients and that involves clinical
2:30treatment. So as we all know um lahat po
2:33or karamihan po ng psychological
2:35disorders are treated or managed using
2:38medications such as um SSRIS po or
2:42stabilizers po or mood stabilizers. And
2:45having a solid or um a simple background
2:48in chemistry may help us po understand
2:51how these drugs po can alter someone's
2:53brain chemistry and then interact with
2:56neurotransmitter receptors po
2:59>> um to affect their behavior and learn
3:02how it affects their therapeutic
3:04outcomes po. Thank you.
3:06>> Okay. Sige. Mag type ka ah Lida ng chat
3:11dito.
3:12Okay. So that I could react para
3:14ma-count siya.
3:16Okay. So tama ano um
3:20some mental illnesses are treated no
3:23using drugs or medication and those are
3:26chemicals those are uh compounds no and
3:31um chemistry would help us understand
3:34how those compounds interact no with a
3:37biological system. No basically ganon.
3:40Tama yun. Tama no? Ayan nag-ano ka na,
3:43nagchat ka na, Lida.
3:47Ayan so sige, okay na yun. Ah satisfied
3:50na ako ng sas sagot ninyo, no. So may
3:51linkage ang chemistry with ah
3:56psychology, no? Ayan sige i credit ko
4:00rin yung iba no. Ayan
4:03okay that would be ayan all. Okay.
4:07Now, basically no uh in your high school
4:10uh you studied also chemistry and if
4:15you're asked to define chemistry no
4:17sasabihin sa inyo is um chemistry is
4:20study of matter, change in matter no and
4:26um
4:27kung ano pa man no na pagbabago sa isang
4:30bagay, structure ng bagay. Ayun. So
4:34basically chemistry we're studying
4:37matter no we're studying changes in
4:41matter changes in the environment
4:44so basically no tayo we no ourselves are
4:49actually made of matter no so
4:53okay halimbawa no class ah isa is isa sa
4:57mga wonders no ng uh chemistry no in
5:00this uh particular picture okay what you
5:04see is the Aurora Borealis.
5:07Sige nga. Trivial question nga. Okay.
5:11Which country do we observe uh Aurora
5:15Borealis? Sige nga. Can you give a
5:18country? [tawanan]
5:19[sumisinghap]
5:20Sige. Ah you just you just chat. You
5:22just chat. Okay tingnan natin. Okay sige
5:26pwede. Finland. Nasa northern hemisphere
5:30yan. Norway. Nasabi na ang Norway.
5:34>> [tawanan]
5:34>> Okay. Iceland. Sige. Pwede. Canada
5:37pwede. Especially kung nandon ka sa
5:39bandang taas pa no ng Canada. O ano pa?
5:42Sweden. Okay.
5:47Sige count natin yung Alaska though. Ano
5:49to ha? Part to ng USA no. Ayan. Okay.
5:53Russia pwede rin no. Ayan. So
5:58ayun.
6:00So yung Aurora Borealis no. It's one of
6:03the product of chemistry no happening in
6:07our atmosphere no and we ourselves iyung
6:12phenomenon happing inside our body
6:16within our brain no iyung mga changes
6:19those are governed no by chemistry no
6:25ayun
6:26so governed by chemistry um even yung
6:30environment natin no governed by
6:32chemistry. So studying chemistry is a
6:36fundamental or foundation to understand
6:39our reality, no? Ayun.
6:44Let's uh proceed.
6:49Okay, for the outline of this uh chapter
6:52uh we will we will be talking about no
6:54how to think like a chemist uh what's
6:57the scientific method, what's physical
7:00state of matter and how to distinguish
7:02mixture from pure substances.
7:07Okay.
7:09Ayan. Now, um,
7:13i-layout ko lang lahat ng mga textes
7:15dito. So again, chemistry is a science
7:17of matter. Then matter is any object
7:21that has mass and occupies
7:26space.
7:27So
7:29are we all matter? Lahat ba tayo dito
7:33matter?
7:36Ano class tingin niyo?
7:39Okay. So lahat tayo ay gawa sa matter.
7:42Gawa tayo sa atom.
7:44Then atom combining you have molecules
7:47no? So basically lahat tayo what we see,
7:50feel, heard,
7:53okay, touch, taste,
7:56no? We're all made of matter, no? Ayun.
8:03Okay. Now, uh chemistry deals with
8:05composition. So ano yung laman nung uh
8:09isang material? No. What are the
8:11elements? Structure, how are they
8:13arranged? Properties how do they react
8:17or uh how can they be described? No,
8:22then their reactivity, reactions and
8:24energetics.
8:26Okay. Now, chemist device experiments,
8:30interpret data and synthesize new
8:34substances. So imagine class uh
8:40yung sinasabi niyong ano mga mental
8:42illnesses that can be treated with
8:45drugs. Okay? So those drugs were
8:50synthesized
8:53by who? No? Sino ba nag-synthesize ng
8:55mga drugs na iyon that are psychoactive
8:58or that are can affect no the brain
9:02chemistry?
9:04No. So most of them are in the field of
9:09psychology,
9:11they're in the field of neuroscience
9:13and
9:15no, they have um knowledge of chemistry
9:19'di ba? So ibig sabihin iyung chemistry
9:21it's not limited to ito no malalaman
9:26niya yung fundamentals no but you can
9:29actually use it no to the frontier dun
9:32sa mga research frontiers ng inyong yung
9:34field psychology ' ba? Okay. Ayun.
9:40Okay.
9:42Sige next tayo
9:44no. How to think like a chemist no? So
9:47number one chemist tries to explain no
9:51the macroscopic world. So macroscopic
9:54these are the things that are observable
9:58to the eye no? Ibig sabihin without the
10:02microscope without the
10:05without the aid no of lenses.
10:09Then they also wanted to describe the
10:11microscopic world no? So ano ba iyung
10:14microscopic world na tinatukoy? Bacteria
10:16ba? Hindi naman no. uh atoms and
10:21molecules. Then sometimes even smaller
10:24than atoms yung tinatawag nating
10:26subatomic particle and even smaller than
10:29subatomic particle yung tinatawag nating
10:31quantum particles no? Ayun. Now chemist
10:34try to understand how and why chemical
10:39changes occur in the nature and even in
10:42the human body. Noan.
10:48Kayo ba class? May tanong ako sa inyo.
10:51[tawanan]
10:52Okay. Kapag ba may changes sa body
10:55ninyo,
10:57no, can it affect the way you think?
11:03Pwede ba yun?
11:07No. Sige nga. So most of you would agree
11:11no? Okay?
11:14Kasi the way we think is affected by the
11:16environment. Isa affected by happening
11:20within our body no. Ayun we are actually
11:24no ah reactive
11:27species. We react with our environment
11:30no. Ayun.
11:33Okay. Now, uh a microscopic view of
11:37water or matter, no? So, yung water, if
11:41you look onto it, so ano ba ang water?
11:44How would you describe water? Water is
11:47fluid. 'Di ba?
11:50Water is fluid.
11:52Can can water become uh solid? Pwede ba
11:56maging solid ang water?
12:00Mmm. 'Di ba pwede? Now, uh yes.
12:05Okay. At what temperature do we observe
12:07solid water?
12:10O unang makasagot may recitation na 'to.
12:12At what temperature?
12:22Oh, 0°
12:24celsus. No, okay. That's the freezing
12:28point, no. once reached 0° Celsius.
12:33You can now observe a solid water called
12:36ice. Now, can water become gasous
12:42or vapor?
12:45O, at what temperature? Ayan na.
12:49Okay. At what temperature? Kailan?
12:55Ah, 100°
12:57Celus. Ah ito teka teka i-credit ko yung
12:59tatlo ha. Isa, [sumisinghap]
13:02dalawa,
13:04tatlo. Okay.
13:10Sorry nag-shutdown yung ano ko
13:12microphone ko. A okay. Now, water can
13:16become solid.
13:19Pwede siyang maging liquid
13:22and gas.
13:25Okay. So ito yung tinatawag nating
13:27physical
13:30state. Pwede siyang magbago no? Based on
13:33the uh temperature, based on the kinetic
13:36energy, no? Now, yun yung nao-observe
13:39natin macrocopically,
13:43ibig sabihin with our naked eye. But
13:47saan ba gawa yung water? No primarily?
13:51Okay. So using specialized no microscope
13:55no halimbawa atomic force microscope no
14:00we can actually tell ah ano iyung mga
14:03atoms no okay so we all know that water
14:07is made of two
14:10hydrogen
14:12atoms and an oxygen
14:17atom noan
14:20So all of this no are covalently bonded
14:27okay and
14:30this constitutes no to to form water.
14:33Magkakasama sila to form water. Okay
14:37yan.
14:40Okay now scientific method.
14:44Okay. So
14:47yung kanina ganun daw ang chemist no na
14:50ino-observe niya yyung macroscopic
14:52can be seen by a naked eye and then the
14:56microscopic
14:58what are the elements the compounds the
15:01composition of a matter no
15:06chemis also follow what we call the
15:09scientific method okay may tanong ako sa
15:12inyo clas
15:14Is psychology
15:16a science?
15:20Okay.
15:22Syempre no science ang psychology no? Ah
15:27it's the science of ano ba? Human
15:30behavior ba ang ano ang psychology?
15:34Okay. Ayan correcto oh. Yan. Okay. So
15:37basically ang psychology it also follows
15:41the scientific method. So papaano ba
15:43yung scientific method? Let's make it
15:45simpler. Since elementary pa lang kayo,
15:47you would you would be taught with this
15:49ba? Okay. Basically,
15:52uh you use scientific method to address
15:56a prob
15:59problem.
16:00Tama. Okay. So,
16:08it address a problem. Sige nga class. Do
16:11we have problems?
16:14Sige nga. Do we have societal problems?
16:18Do we have societal problems? Ayan.
16:23Sige nga. Can you give me one problem?
16:25Ayan, sige paunahan na lang ha.
16:30Blood issues. Okay, correct. Poverty.
16:33[tawanan]
16:34[sumisinghap] O, correct. Hindi ko
16:36masabi yung paksilika. O, corruption is
16:38also a problem.
16:40Ano to? Mental. Ayan. Ito. To to. Gusto
16:42ko 'to. Stigma towards mental health.
16:46Agree ako diyan. Okay. Climate change.
16:49Ano pa? Naku po. Suicide rate. Okay. Ano
16:53pa? Bullying. Okay.
16:58Okay. Sige. Yan. Na-credit ko na yung
17:00iba ha. Ayan. So
17:04'yung sinasabi niyong mga problema no.
17:07Ayan. So 'yan. Totoo 'yan. Mga problema
17:09talaga yan no. Now, how do we solve
17:12problem?
17:14Okay. O sige dagdag natin to.
17:16Unemployment.
17:18Ayan. So, how do we solve problem? So,
17:20ano yung first step natin? Ito na. Sige.
17:24Ah, first for you to be able to solve
17:27the problem is for you to collect the
17:30facts and data.
17:34Aaralin mo muna yung problema mo ' ba?
17:37Aalamin mo muna yung problema mo.
17:41Okay yan. So collect facts and data.
17:45Okay? Relevant to your question or
17:48problem.
17:50Then next is you need to think of an
17:55idea or hypothesis
17:58or ways
18:01on how to solve your problem. Then
18:05afterwards you would conduct
18:08experiments or ano bang simpler words
18:11diyan? Trials. Ayan. Susubukan mo 'di
18:14ba?
18:16If
18:19okay failed anong gagawin? [tawanan]
18:22Okay if failed you have to modify the
18:26hypothesis or the idea on how to solve
18:29it and then you have to try again. Ba
18:35okay class ah sa mundo natin no ah yung
18:40mga bagay hindi naman agad-agad perpekto
18:42eh.
18:44Anong evidence na hindi lahat perpekto
18:46agad? For example class, ah sino sa inyo
18:50nakaabot na yung
18:53cellphones natin keypad pa. Sino sa inyo
18:56nakakita ng keypad na cellphones
18:59or nakagamit?
19:01O ayan oh. 'Di ba? Ah bakit nowadays
19:06no'no? Ah ano bang reason bakit nowadays
19:10we are now preferring touchsreen? Ano
19:13bang problema sa keypad?
19:16Mm
19:19O sige. Si Miss ano si Miss ah Miuki
19:22gusto raw magsalita. Sige Miss you go.
19:24You can talk.
19:27Hello po. Audible po ako Prof. Ah yes.
19:30So with key po kasi limited lang yung
19:33mga pwede nating gawin unlike with our
19:37um touch gadgets po. In our touch
19:39gadgets po we can do a lot of things and
19:42updated na din po siya. Allr ayun. So
19:47okay, efficiency nabanggit dito. Tama,
19:50mas marami kang pwedeng gawin with uh
19:53ano no touch screen. Okay.
19:57Um so from conventional phone we now
19:59move to what we call a smartphone no?
20:02Plus yung keypad kasi over time since
20:05it's mechanical no ah pwede siyang
20:08masira no over time. Kakapindot mo while
20:13'yung touch screen 'no? Uh flexible
20:16siya. Baka kapindot ka rin don'n. Pwede
20:18rin siyang mabasag. Okay? [tawanan]
20:20Pero still you have more functionality
20:22with it no' and yyan tama 'to
20:25connectivity no'no. Ayun. So that's one
20:28example 'di ba? O sige ng magbigay pa
20:31tayo ng isa pang problem.
20:33Okay. Um, halimbawa
20:38high prices of gas and uh diesel.
20:44How did we responded to this? Papaano
20:46tayo nag-respond? Anong ginawa natin?
20:52Okay. Kung may problema tayo sa gas and
20:54gasoline and diesel or fuel, no? Or make
20:58it fuel.
21:01Petroleum na lang. Ayan. petroleum.
21:04Ayan.
21:06Okay. So, how did we responded? Papaano?
21:09Teka, i-count ko pala 'tong iba.
21:15Technological advancement.
21:21Okay. Okay. So
21:25yung iba no gumamit ng renewable energy.
21:29Okay. So primarily no ah nauuso ngayon
21:33yung tinatawag nating solar
21:36no wind and even sa mga transportation
21:41vehicle we are now using no marami na sa
21:43atin gumagamit ng tinatawag na EV no
21:47electric vehicle no. Ayun. So
21:52with ano bang sense nitong sinasabi
21:54natin no? With all the problems no that
21:57we encounter as human we think of
22:01solutions.
22:03Yun lang no? And how do we bring
22:05solution?
22:07Uh it's the it's true scientific method
22:11no the scientific thinking.
22:15Okay no? Ayan. May questions pa ba so
22:19far? May tanong ba kayo?
22:21Okay.
22:24Okay. Ayan. Now, what's the difference
22:27with theories and law? Ano ba pinagkaiba
22:31pag sinabing theory? Pag sinabing law?
22:39O sige one single one single student na
22:43lang gustong sumagot.
22:46Theory is an educated case. Ba
22:49hypothesis ang educated case?
22:53Okay. Ito maganda ong sagot nito. Pwede
22:55to.
22:59Mm. Sige. Theory is ano it's it tries to
23:04explain
23:06something
23:07with limited experimentation.
23:10No, hindi pa siya fully concrete yung
23:13theory. It can still be debunk.
23:16Pero yung law, it is universally proven.
23:20It's how the universe works. Okay.
23:27Ayun. Example ba yung isa sa
23:29pinaka-famous na theory, it's a big bang
23:33theory.
23:37Ayan.
23:40Okay.
23:42Ayan. So yung Big Bang theory for
23:44example no it's it's trying to explain
23:47how the universe started. However, no uh
23:52we don't have enough no uh scientific
23:56support or evidence or experiment that
23:59can be done to 100%. Nono, prove it.
24:04Ayan. Tama yung sinabi ni Lucilla dito
24:06no? Theories are
24:09falsifiable. So pwede pang ah mabago,
24:13pwede pa ma-debank. Pero yung law no,
24:17kahit saang part ng universe ka
24:19magpunta, even in another planet, it is
24:23still observable.
24:25Okay? Sige nga. Do you know any
24:29scientific law? O kahit anong ano?
24:32Scientific law.
24:34Ano ba? Bendalo. Ay bendalo. Ayan. Okay.
24:40Yan. Okay. Laws of motion. Okay. By IA.
24:45Ayun yung mga newtonian loss no. Ayan.
24:48Okay. So these are observable no. Okay.
24:53Ohms. Okay. Sa electricity physics 2 no.
24:57boils pwede ba so ano pa constitutional
25:02law
25:05[sumisinghap][tawanan] ayan penal law
25:07okay
25:08okay joke lang po ha law of
25:10thermodynamics okay o sige count natin
25:13to
25:20okay so there are many no ah proven
25:23facts no
25:26Okay. In in the science, no? Ayun.
25:30And those are
25:33loss, no? Hindi sila basta-basta
25:36made-debunk no. Ayun.
25:42Okay, sige move tayo.
25:45Now, particular nature of matter no? So,
25:49saan ba talaga tayo gawa?
25:52So, ang sabi sa science no,
25:56um, the smallest matter no observed and
26:01known, no, sabi ay atoms
26:05but there are smaller than atoms, no?
26:09Yung tinatawag nating subatomic.
26:12Teka.
26:14So dito papasok yung tinatawag nating
26:16proton,
26:19electron,
26:22neutron
26:25and then meron pang mas maliit dito no
26:28yung tinatawag nating quantum.
26:32Okay? Quantum particles. Yung mga
26:35quarks, leptons, bosons, no? Ayan. So
26:41ayan. And this no lahat 'yan okay sila
26:47they demonstrate um wave and particle no
26:54okay
26:55now uh they can be seen or observed sabi
26:59dito using scanning tunneling microscope
27:04noan
27:06and so
27:08Sige.
27:12Okay. Now, in terms of the physical
27:14state of matter, there are matter that
27:17can be observed as solid.
27:20Ano ba yung solid? Yung solid daw should
27:22have definite shape
27:25and should have definite
27:28volume.
27:30Okay?
27:32So ganun ba yung solid? May hugis tapos
27:34may space na kayang i-occupy no? So
27:38ganun no? Okay. Most common solids are
27:42crystalline have regular and repeat
27:45repeating threeimensional geometric
27:47pattern no? So meron siyang length,
27:52meron siyang wid tapos kung minsan meron
27:55siyang height no? So threedimensional
28:01ayan
28:03uh solid water molecules are held
28:05together no very closely no with lowered
28:08kinetic energy. Ayan.
28:13Okay. Tandaan class ha. Solid definite
28:15shape and volume.
28:17Okay. Now,
28:20not all solid no uh
28:23have this you called um
28:29can easily be ano um measured. No, yun.
28:33There are solids that are amorphouse.
28:36Ibig sabihin irregular yung shape niya.
28:38Ayan. So ayan. amorphous solid. Pwedeng
28:41ganito 'no? Ayan. Halimbawa 'yung
28:44irregularly shaped 'no na rock. Ayan.
28:49Okay.
28:52Ayan. Now, liquids.
28:55Okay. Kung yung solid may definite shape
28:58and volume, liquids have definite volume
29:01but no definite shape.
29:04Okay? So walang ano,
29:06wala siyang shape yung liquid.
29:10Okay. Pwede bang magkaroon ng shape ang
29:12liquid?
29:16Okay. Ito correct.
29:19Okay. The shape of the liquid depends on
29:21its container. No
29:26yan.
29:29Okay. And um they are still held
29:32together by strong attractive forces.
29:35However, they can move freely. Ayan.
29:43Ayan. So
29:49okay o no? Liquids are fluids which
29:53allow them to take the shape of the
29:55container. Ayan. Okay. Sige move tayo.
30:01Review na lang yan sa inyo. Then we have
30:03gas. No indefinite volume and fixed
30:07shape.
30:09Okay. Uh classung
30:13mga gasous material ba?
30:17Can you
30:19hold them with your bare hands? Pwede ba
30:23yun? Hahawakan niya yung gas.
30:29Mahirap no? It would be difficult. Okay.
30:32To hold the gas.
30:34Now, can you feel them? Can you feel the
30:36gas?
30:40Ba? Oh, yes. Syempre. Paano pag may
30:43umutot no? Ngayon gas yun. [tawanan]
30:47[sumisinghap] Okay. Now, you can feel
30:50them but you cannot control them with
30:53your bare hands. No. Now, can you place
30:55them in a container? Iung gas.
30:59So answer is also yes. O halimbawa meron
31:03kang ano, meron kang balloon ' ba. So
31:07ito yung balloon mo.
31:09Nagi-iinput ka ng air no. Ayan.
31:14So air
31:17balloon no? Tapos uh if you input and
31:23place more gasous no compounds
31:26yung balloon mo no kapag hindi na kayang
31:30i-expand nung rubber nung material
31:34so it can no ah
31:38pwede siyang puputok ba okay kasi
31:41tumataas yung
31:43pressure no dumadami yung gas inside no
31:48um good thing about gas they can they
31:50can be compressed no kung strong no yung
31:56container niya solid no like metal so
31:59pwede silang i-compress yung mga gas
32:02doun sa loob no so they're compressible
32:05yan can be compressed
32:08okayan
32:12Now, okay. Um, materials are held
32:16together, no, by attractive forces.
32:19Ayan.
32:21So, attractive forces. So papaano ba no?
32:26So may dalawang klase. Pwedeng intra,
32:29pwedeng inter molecular force no? Okay.
32:33Pag sinabing intra within the molecule
32:38the molecule it's interaction with other
32:41molecule no? Okay?
32:46No. Attractive forces are strongest no
32:49in solid. So yun daw attracted
32:54attractive forces
32:56is greater on solid.
32:59Next is liquid and then gas. So may
33:03pinakamahina no na attractive forces are
33:06the gases.
33:08So kaya sila kalat-kalat no? Yun yung
33:10property ng gas. They can move freely
33:15whever they want.
33:18Okay.
33:24These are the materials no uh can be
33:28observed in our environment. No, these
33:32are the solids,
33:34liquids,
33:36and gases. Okay.
33:43Now, classifying matter, no? How do we
33:46classify if it is a pure substance?
33:50Okay. Has okay, a pure substance has a
33:54definite fix composition.
33:58It's either an element or a compound.
34:03Okay. Plus, sige. Example,
34:08may container ako dito, ano. Ito yung
34:10container ko. Ayan. Pasensya na kayo sa
34:13drawing ko ha.
34:15So, may nilagay akong
34:18okay ah compound dito. Ano nakalagay
34:21dito
34:24glucose
34:27yan.
34:28Tapos dito sa isang container, teka
34:30baguhin ko 'yung color. So may isa pa
34:32akong container.
34:37Okay. Ah nung una meron ditong ano meron
34:41ditong salt.
34:46So meron merong ano merong
34:50lagay ko dito
34:53salt.
34:54Tapos no ah nilagyan ko ng isa pang
34:59sangkap no. Naglagay ako dito ng ano
35:03ah sugar glucose no?
35:08Okay.
35:13Glucose. Okay. Ayan.
35:16So
35:19which one is a pure substance? Is it A
35:23or is it B?
35:27Sige nga. Okay. Correct. No. Sinong
35:29nauna? Ayun
35:32si ano si Miss ah Miuki no.
35:37Ayun. So ang pure substance po natin
35:40dito ito. No, bakit? Kasi ito yung
35:43walang kahalo no. Kaya nga pure eh ba
35:47meaning no other compounds is uh mixed
35:52with it in the container
35:55ba. So ito ang tawag na natin dito is a
35:59mixture.
36:02Okay.
36:05Gets po ba?
36:07Ayan. Ang tawag na natin dito ay
36:08mixture.
36:10So ito pure
36:13substance no? Subs na lang. Ayan. So ang
36:16pure substance daw pwedeng element,
36:18pwedeng compound.
36:22Okay.
36:24Now, classifying matter. No, matter can
36:27appear no as homogenous.
36:30They can also appear as heterogenous.
36:34Pag sinabing homo,
36:37homogenous uniform yyung appearance.
36:40Same. Hindi mo ma-distinguish.
36:44O halimbawa class may baso ka
36:48tapos may water no? May water dito
36:53tapos naglagay ka ng pinch no ng salt.
36:57Naglagay ka ng salt no inside.
37:00Konting-kunti lang. Okay ah. Kaya mo
37:03bang maturo? Kaya mo ma-distinguish kung
37:06nasan 'yung
37:08salt? 'Di ba? Hindi.
37:11So that's classified as
37:15homogeneous. No? Paano pag hetero? Okay.
37:20Halimbawa hindi salt ang nilagay ko.
37:22Hindi salt ang nilagay ko ay soil
37:25buhangin.
37:27O ngayon kaya ko na bang maturo kung
37:29alin doun yung buhangin? Alin doun yung
37:31water no? O kaya na no? Pwede na. So
37:35therefore yun ay hetero.
37:38Okay.
37:42Ayun.
37:47Ayan. So
37:50we go to mixtures. Mixtures is a
37:53combination of two or more pure
37:56substance
37:58and can be homo or hetero.
38:03So pag homo same appearance. Pag hetero
38:06different pwede m ma-distinguish.
38:09Okay. Example ng hetero
38:12no.
38:13O to to yan kita niyo
38:18oh yan o bakit kaya hindi sila
38:19naghahalo? Sige nga class. Anong dahilan
38:22bakit hindi naghalo 'yan? Ginawa niyo ba
38:25'to nung high school kayo?
38:28O ginawa niyo ba to nung high school?
38:33Okay yun. One reason is tama to.
38:37Pwede mong subukan to sa oil and water '
38:41ba
38:43polarity ito. Correct. Correct. Ayan
38:46polarity yan.
38:49Sige na nga. Pwede yung ano difference
38:51in composition. Sige na
38:53density. Correct. O to. Tama to. O
38:56na-review na kayo 'di ba? O sige na.
38:59Different properties yan.
39:03Okay. O sige. Now, yung mga bagay no,
39:06may compatibility sila para maghalo
39:09sila. Para hindi maghahalo, may
39:11compatibility lahat ng bagay, no? It can
39:14be with their density, it can be with
39:16their polarity,
39:18ah their property, no? Ayun. So ayun po,
39:23no. Okay.
39:28Now, can we separate mixture? Kung ang
39:32mixture pwedeng pagsamahin, pwede rin
39:34bang paghiwalayin, no? So, ito yung mga
39:36method na pwedeng gawin. Okay. Boiling,
39:41filtration,
39:43float,
39:45magnetism. Pwede ka rin mag
39:48chromatography.
39:52Okay?
39:55And there's other procedures,
39:59okay, that we can use um to segregate or
40:03separate mixtures, no? May ganun tayo.
40:08Okay.
40:10Ayan
40:13oh, pwede no'no? Decantation pa. Ayan,
40:15pwede. Tama 'to 'no? Pwede kang
40:17mag-decant.
40:19Oh, sige nga. Halimbawa sa boiling. Oh,
40:24sige sa boiling. Sa boiling for example
40:28meron kang container.
40:31Okay? Sa loob nung container mo ang
40:33magkahalo dito no? Alcohol
40:39plus
40:40water. O yan
40:44oh.
40:45Plus, how would you separate them?
40:48Okay.
40:49Halimbawa pakukuluan mo no? I-expose mo
40:51sa temperature.
40:54Okay. Ayan. O, distillation. Correct.
40:57Pwede no? Ayan. So, pag nilagay mo siya
41:01at 40 de celus, no? Pwedeng yung alcohol
41:07aalis na siya, no? Yung alcohol
41:08mag-escape na.
41:12Tapos yung water
41:14magre-retain, maiiwan no? Gets niyo?
41:20Ayun. So separation siya no? Pwede ring
41:23evaporation pwede rin. Okay? Napansin
41:27niyo? So we can actually separate.
41:31O paano kung kung ano kung hindi
41:33alcohol? Madali lang yung alcohol sir
41:34eh. Paano kung hindi alcohol? For
41:37example,
41:39halimbawa
41:41no, na nat-trap ka sa isang isla o ikaw
41:44'to
41:48o. Tapos sa paligid mo puro ano na dagat
41:52'no? Sea water. So kailangan mo ng ano?
41:55Kailangan mo ng drinking water.
41:59Oh paano 'yun 'no? So ang meron ka may
42:02mga
42:04tawag dito dried leaves ka. Pwede kang
42:06mag-create ng flame.
42:08Okay? So paano gagawin mo? How would you
42:10segregate no? Yung water from the salt
42:14no? So
42:16ayun. So pwede rin no pwedeng i-flame mo
42:19yung water mo tapos maiiwan doun sa
42:22container yung solid na salts no tapos
42:26yung
42:27ah magbe-vaporize
42:29no yung water no. Ayun
42:34ah sa filtration naman madali no. So
42:36gagamit ka lang ng porus ah material.
42:49Mmm. Okay. Okay. Pwede. Oo. Ayan. So
42:52another is filtration. Yan. Gagamit ka
42:55ng porus material. Ibig sabihin niyo may
42:57mga butas na materials no. So pwede mong
43:01ma-segregate yung solids from the
43:03liquid.
43:04Pag float naman so may difference sa ano
43:09sa density no? Pwedeng lumulutang yung
43:11iba, iba naman lumulubog ' ba. Sa
43:15magnetism no you're ah exploiting no
43:19yung magnetic property ng isang bagay
43:22no. Ayan
43:25o. Sige game. Oh.
43:29Dito isa lang kukunin ko ha. Ah magase
43:32kayo ng ng arm or ng hand when
43:35answering. Okay?
43:37Let's practice. Which of the following
43:39is a heterogeneous mixture?
43:44Alin dito? A baking soda,
43:48B gasoline,
43:50C grape juice, D copper metal or E soil.
43:57O sige si Leida. Leida po
44:00ah. Oh anong sagot ni Lida?
44:04>> Good afternoon po sir. Am I audible po?
44:06>> Yes po. Yes po.
44:09>> Soil um the correct answer po is letter
44:12E po. Soil is the heterogeneous mixture
44:15po. Sige tignan natin ha.
44:18Okay so the answer is soil. Okay. Bakit
44:21no'? Kasi 'yung soil ' ba ah pag
44:25tumingin ka sa lupa 'di ba? So makikita
44:28mo may mga rocks, may mga grasses,
44:33may mga insects. So magkakahalo sila
44:35doon no. Okay? Tapos pag tinignan mo
44:38naman yung copper metal so bakal metal
44:42no? Tapos yung sa grape juice naman, it
44:45would appear
44:47the same. Yun lang magkakahalo doon. 'Di
44:49ba?
44:51Um, gasoline appears the same. Yung
44:54baking soda rin ganun din. Powder lang
44:56na white, no? Ayan. Okay. So, sige. O,
45:01next tayo. Next. Ayan. Which of the
45:03following
45:05okay is a homogeneous mixture? O
45:08naka-raise ng hand si Miss Miuki
45:12Soroka. Ayon. Anong sagot po?
45:21Homogenous naman tayo.
45:26Wala. O sige si baka na-race lang si
45:29Miss ano Kst Ksten kaya hindi ko mabasa
45:32'yung surname niya.
45:35Ayan Pagatpat. O sige miss you can
45:38answer.
45:40>> Hello po prof. Am I audible po?
45:42>> Yes po, audible po.
45:48>> Wait lang, sorry po. Nag nagla-log po.
45:51Um my answer po would be Mercury po.
45:56>> Ah, Mercury.
45:59Okay. Sige, check natin kung ito ang
46:01tamang sagot ha.
46:05Ah ay okay. Hindi pala 'yun ang tamang
46:07sagot. Sorry. Okay. Ayun. Nice try no.
46:12Ah explain natin bakit hindi iyun yung
46:14tamang sagot. Sige. Ah ito kasing a
46:21compound.
46:24Bakit? Kasi you have two
46:29elements.
46:32Yan compound na siya. Join together. So
46:36dito so meron kang isang carbon tapos
46:40meron kang dalawang oxygen.
46:43Ito naman yung mercury ah walang ibang
46:46binanggit diyan. It is classified as
46:49element.
46:51Okay? So ito ay itong dalawang to ay
46:54pure
46:56substance. Gets po ba? Tapos ang tanong
47:00kasi dito, which of the following is a
47:02homogeneous mixture? No, okay. Bakit
47:06hindi pwede ang concrete wall? Ah kasi
47:10yung concrete no
47:13ah what if yung concrete natin kita pa
47:16yung mga hollow blocks.
47:19kita yung mga rocks, kita yung cement,
47:22kita yung um metal or halimbawa finish
47:26yung wall pero may window, may etcera
47:30no. Okay. Tapos bakit ah hindi Italian
47:36salad yung sagot no? Kasi kita mo rin
47:38yung iba't ibang sangkap. Hindi siya
47:39homogeneous.
47:43Okay. So itong dalawang to this goes
47:45with hetero.
47:49Then the possible answer for this is
47:51maple syrup. No so kasi it's a mixture
47:54but appears the same.
47:58Okay yan.
48:02O next. Oh ito na. Ito na.
48:05O sige na bigyan kita ng points doon ha.
48:08si sino 'yung nag-recite? Chat ka nga,
48:09miss.
48:11Si ano Miss Pagatpat.
48:14Chat ka chat kahit ano lang.
48:21Ah sino pang hindi ko natawag teka. Oh
48:24ito ah dalawa. Ayan ito. Sige. Si Miss
48:27ano Miss Acidilyo.
48:30Tama ba? Opo, sir. Acidilyo po.
48:35Okay. So sa filtration is a common
48:38method to separate components of what
48:40type of mixture? Letter C po,
48:43heterogeneous mixture of solid and
48:46liquid. Okay. Correct yata to. Okay,
48:48tingnan natin. [tawanan]
48:50[sumisinghap] Okay po. Correct po. Bakit
48:52no? Kasi ah hindi ka pwede mag-filter ng
48:55dalawang solids,
48:58no? Hindi ka rin pwede mag-filter ng
48:59dalawang Ay, sorry, sorry. Tama. Hindi
49:02ka pwede mag-filter ng ano um dalawang
49:05liquids. Hindi pwede.
49:09So you're filtering solids from a
49:13liquid. No, yun yyung simplest
49:16explanation no. Ayan
49:21Ay wala na pala. Okay na yun. Teka chat.
49:25Yung mga nag-ano nag-recite. Si Miss ano
49:28asid
49:30chat kayo chat kayo. Bili pati si ano
49:33Miss Pagatpat ha.
49:37Chat kayo bili para maano ko
49:39ma-thumbsupan ko kasi yun yung
49:41kina-count ni ano eh
49:43nung AI.
49:45Okay.
49:51Oras na
49:53ah. Nakaisang oras din tayo. Okay. May
49:55questions pa ba so far? Hindi nag-chat
49:57sila. Teka.
50:05Ayan. Sige sige. Yung isa pa si ito to
50:09si Miss
50:12Ito to si ano si Lida at saka si
50:17Dilio. Okay. May questions pa ba kayo so
50:20far? May tanong kayo?
50:24Mm sige po. Si Oliva may tanong.
50:30Hi sir. Ah medyo nalate lang po ako ng
50:33pasok kanina mga 4:30 po kasi po
50:36nagkaroon rin po ng problem sa
50:37connection po.
50:39>> Okay. Okay. Ah attendance ano yung
50:41concern mo?
50:43>> Opo.
50:44>> Okay na. Naano ko na-lift ko na yung X.
50:48Okay na po.
50:50>> Ayun. Um plus I noticed no'usly
50:57being disconnected then reconnected no
51:00reconnecting no so
51:04keypad. Ayun okay hindi pala baka hindi
51:07ma-count. Ayan ay yananan
51:09yan okay umm
51:12hanap kayo ng sta ano ha na internet
51:15kung meron ha.
51:18But uh if all else uh failed no, may
51:21recording naman ito. I would still post
51:23it para wala kayong ma-miss ha. Okay. So
51:26that's for our first uh discussion.
51:30Teka, may gusto pala akong sabihin pa.
51:33Wait lang po bago kayo
51:36ah bumatsi no? Teka.
51:39Okay. Um
51:42for the laboratory pala no.
51:45Okay, ito yung mga kakailanganin niyo.
51:49So you need
51:52labdown.
51:54Wait lang ha.
51:56Mask gloves
51:59hairnet. Yan.
52:02Okay. For the laboratory. Okay. Kita ba?
52:07Dito ko isulat sa baba ha.
52:11Okay, this are the things that you
52:14should wear.
52:18Okay. During lab experiment,
52:22strictly, no love gag
52:26wala kayong lab.
52:30So ibig sabihin you will get 70
52:36for that experiment, for that activity.
52:40Ah is 70 bad? Ah yes bad yun. Bakit? Ah
52:46malaki yung pull no sa grade ninyo, no?
52:49Okay.
52:52Ayan. So what if wala naman akong
52:55gloves? No, you can attend but you're
52:57not allowed to touch no ah things.
53:02Pangit naman din non no. So nag
53:04magma-minus naman ako kung wala itong
53:06mga to dito nagma-minus ako dito pwedeng
53:09-5
53:11-1 depende ha sa
53:14um utilization n mga to no okay now
53:20since you guys are 52
53:23students from my list
53:26okay so I might group you guys into
53:30okay
53:32eight groups
53:33Ayan. So igu-grupo ko kayo into eight
53:35groups. Ayan. So I would post it sa GC.
53:41So it will be randomed.
53:44Okay lang ba sa inyo kung randomed?
53:49Is it okay with you guys random
53:50grouping? Wala naman kayong Walang
53:52magkakaaway sa inyo ganon.
53:55Wala.
53:57Okay. Actually ready na ako pag
53:59nagkita-kita tayo eh. Oo ah. Nag-order
54:03na ako nito. Tingnan niyo. Ayan sa GC
54:05seend ko
54:08yan. Kita niyo nasa GC
54:14morder na ako. Yan mahirap na ' ba. So
54:22yan
54:24kulang pa yan ah.
54:27May keblar yan para bulletproof ba?
54:34Joke lang po ha. Ayan. So ayan. Ito yung
54:38kailangan i-wear no. So magkakaroon din
54:41tayo ng groupings. Yan lagay ko dito.
54:44How many groups? Eight.
54:47Okay. Um, how many experiments are we
54:50going to have uh for the span of one
54:55sem or 5 months? Expect that we will
54:58have
55:00six
55:02experiments, no?
55:05Okay.
55:07Ayun. So you have three experiment for
55:11midterm
55:12and then three experiment for finals.
55:17Ayan. Then you would have also, teka
55:23i-layout ko ng maayos. Wait lang class.
55:25Ayusin ko para hindi confusing.
55:37Wait lang ha.
55:42What?
56:02Okay.
56:04to wear jury lab sessions then um what
56:07else
56:11how many experiments
56:16okay 3 for midterm 3 for finals
56:25how many exams
56:29you're supposed to have marami rin
56:35Okay.
56:38Okay. Midterm
56:40finals
56:42yan.
56:47Okay. Tapos ah how many quizes?
56:52Ideally nagbibigay ako ng 4 to six
56:55quizes for midterm.
56:58Then another 4 to six quizes for finals.
57:06What else? How
57:09assignments? Ideally one assignment for
57:12midterm 14
57:15minus.
57:18Yan. Tapos since you have six
57:21experiments, you would also have six.
57:24Teka may equivalent yan na three
57:26reports.
57:28Ano ba yung reports? Hindi yung report
57:30na magsasalita kayo ha. Written report
57:33no?
57:37Or laboratory report.
57:40Um
57:42I would give you no guide questions then
57:44you would answer those no based sa
57:47result ng experiment niyo ganun siya. Um
57:51ano pa ba?
57:53How would you pass uh the subject? Ang
57:56sabi dito is
57:59ah wait ibigay ko na lang sa inyo yung
58:00ano um guide no para doon. Okay so
58:08estimates lang to guys ha. Can be more
58:10than this pa. Pwede pang mas marami pa
58:12rito no. Ayan. Okay.
58:17And then um
58:21around October so pwede ko na mabigay sa
58:25inyo yung inyong tinatawag na midterm
58:27grade so you that so that you would know
58:30uh what's your standing no doun sa
58:33subject. Okay lang sa inyo yon.
58:38Ayun both lecture and love bibigay ko
58:40yung ano niyo, midterm niyo. Okay?
58:45Ayan. May tanong pa ba? Clarification?
58:54Okay. O sige na. Umm ah sige sige. May
58:58tanong daw si ano menor at saka si
59:01Miranda. Sige si menor muna.
59:04Good afternoon po sir. Sorry po. Curious
59:06lang po if ever po since this is quite a
59:09highly technical course po. May I ask po
59:11if you are open for consultations po sa
59:14gradings po or sa scores po namin in
59:17case po kunwari medyo feeling po namin
59:21po kami sa nagiging performance namin.
59:23Thank you po. Ah yeah yeah yeah. Oo.
59:26schedule guys uh you can just PM me or
59:32email me then we can uh schedule it no
59:37ayun
59:39okay si Miss ano Miss Miranda
59:42yan po. Hello po sir good afternoon
59:44i-ask lang po if ise-send niyo po ba
59:47yung powerpoint sa amin and kailan po
59:50magi-start iung official experiment po?
59:52Thank you po.
59:53>> Um yung experimentations pwedeng next
59:55week. kung may electricity na no if none
1:00:00uh we use the love hours for discussions
1:00:06para hindi sayang yung time natin no we
1:00:08are progressing no ganon basta ganito
1:00:12lang class no
1:00:15ah
1:00:17kailangan maano natin ma-meet natin yung
1:00:19ano objective nung course. 'Yun lang
1:00:21talaga. Okay.
1:00:25Ayun oh. Sige na. Nasagot ko na lahat ng
1:00:28questions ninyo. Okay na tayo?
1:00:31Ayan.
1:00:35Okay.
1:00:37Sige. About the quiz pala ha. Minsan
1:00:39magbibigay ako ng quiz ano na online no?
1:00:44Ayun. Minsan nagbibigay ako ng ganon
1:00:45especially kung ano lang siya ah
1:00:47conceptual quizes lang about knowledge
1:00:50lang. Okay. Ayun. Pero pag computation
1:00:53uh of course we have it face to face
1:00:56paper and pencil. Okay po.
1:00:59Ayun. Then ah you need scientific
1:01:02calculator kasi may math yung subject
1:01:04natin. Lahat naman kayo meron no? At
1:01:08saka periodic table. Ayan
1:01:12ah. Sige yun lang class. Okay.
1:01:17Thank you for attending this session.
1:01:19Uh, I'll end this uh meeting now ha.
1:01:22Ayan sige uh ba-bye na. [tawanan]
1:01:26Ayan.

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