1-1. welcome to Chem 1A. this is Lec C I am Professor Penner
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1 1-1 welcome to Chem 1A this is Lec C I am Professor Penner
2 1-2 in this lecture about Chem 1A about Chemistry atoms - the building block. who knew? (and how did we find out)
3 you are a select group 1-3 number admitted to UC Irvine for F/2017: 8600
4 you are a select group 1-4 number admitted to UC Irvine for F/2017: 8600 total size of UC Irvine student body: 33,467.
5 you are a select group 1-5 number admitted to UC Irvine for F/2017: 8600 total size of UC Irvine student body: 33,467. number of apps for F 2017: 104,672
6 you are a select group 1-6 number admitted to UC Irvine for F/2017: 8600 total size of UC Irvine student 8% body: 33,467. number of apps for F 2017: 104,672
7 you are a select group 1-7 number admitted to UC Irvine for F/2017: 8600 total size of UC Irvine student body: 33,467. number of apps for F 2017: 104,672 rank of apps to UC Irvine amongst all colleges and universities in the USA: 3
8 a few observations 1-8 it s no accident that you re here. you have worked hard, & developed good habits. college means independence & increased responsibility. keep doing what you have been doing. reach out of you need help - there many resources.
9 1-9 our Canvas website:
10 1-10
11 announcements: 1-11
12 1-12
13 FAQs: 1-13
14 FAQs: 1-14
15 1-15
16 syllabus: 1-16
17 1-17 syllabus highlights: :: we have two amazing Lecture T.A.s: Vivian Chen & Wilfred Russell
18 1-18 syllabus highlights: :: we have two amazing Lecture T.A.s: Vivian Chen & Wilfred Russell :: please don t print anything. It s just not necessary. It will reside at this URL in perpetuity. Let s be environmentally responsible.
19 1-19 my (embarrassing) Thermo website from 21 yrs ago
20 1-20 syllabus highlights: :: we have two amazing Lecture T.A.s: Vivian Chen & Wilfred Russell :: please don t print anything. It s just not necessary. It will reside at this URL in perpetuity. Let s be environmentally responsible. :: now, let s talk about the textbook.
21 1-21 please don t buy this book 2nd Ed. $168.55
22 $
23 1-23 2nd Ed. 1st Ed. $ $37.73
24 1-24
25 1-25 topic Tro 1st Tro 2nd units, meas. 2 E atoms 1 1 QM 3 2 periodic properties 4 3 molecules & compounds 5 4 chemical bonding 1 6 5
26 1-26 there, I just saved you $130 now, spend $11 of it on this book.
27 1-27 syllabus highlights: :: my office: Nat Sci 2, Room 2137
28 1-28 syllabus highlights: :: my office: Nat Sci 2, Room 2137 :: my Please read my FAQs pertaining to .
29 1-29 syllabus highlights: :: my office: Nat Sci 2, Room 2137 :: my :: office hours: after class (2:00-3:00pm) in a shady spot next to the rose garden.
30 1-30 syllabus highlights: :: my office: Nat Sci 2, Room 2137 :: my :: office hours: after class (2:00-3:00pm) in a shady spot next to the rose garden. :: course enrollment: I am not allowed to sign anything. See: webreg.html
31 1-31 syllabus highlights: :: exams:
32 1-32 syllabus highlights: :: the Common Final. To learn more about it, see: :: missed exams. There will be no makeup exams this quarter (exception: Common Final). Excused absences consist of confirmed illness, unavoidable emergencies, etc. Excused absence are to be cleared in advance if such clearance is possible. Unexcused absences will result in an exam score of zero.
33 syllabus highlights: 1-33 :: determination of your grade: Your grade will be determined based upon the following weighting scheme: homework - 10% Midterm Exam 1-20% Midterm Exam 2-30% Final Exam - 40% Total = 100% :: a curve will be used to assign grades based on this scheme. The curve will not be determined until the end of the quarter.
34 syllabus highlights: 1-34 :: once again in larger font: I will not know your grade until the end of the quarter. The best I will be able to do is to calculate the class mean score, and your score, and I will do this before MT2 and the Final Exam.
35 1-35
36 1-36
37 course schedule 1-37
38 I will post PDFs of each lecture here, after the lecture 1-38
39 1-39 every slide has a number example: The serial number of this slide is: 1-39 lecture #
40 1-40 slide # in this lecture example: The serial number of this slide is: 1-40
41 advice for Chem exams are 90% of your grade.
42 advice for Chem exams are 90% of your grade. exams emphasize problems.
43 advice for Chem exams are 90% of your grade. exams emphasize problems. do problems - in addition to those assigned through Sapling.
44 advice for Chem exams are 90% of your grade. exams emphasize problems. do problems - in addition to those assigned through Sapling. take advantage of discussions, and our amazing T.A.s. They want to help.
45 advice for Chem exams are 90% of your grade. exams emphasize problems. do problems - in addition to those assigned through Sapling. take advantage of discussions, and our amazing T.A.s. They want to help. don t get behind.
46 your to-do list 1-46 get a book. register for Sapling. *do Practice Assignment (5 pts) *do Math Review (5 pts) *start HW E (50 pts) read Tro Chapter 1. *note: these assignments are due Sat., Oct. 7, 6:00pm
47 1-47 in this lecture about Chem 1A about Chemistry atoms - the building block. who knew? (and how did we find out)
48 atoms Lecture 1, Thursday Sept. 28,
49 1-49 this is how chemists view the world
50 physics teaches us fundamental fields and forces 1-50 everything starts here
51 but in the real world, we need to 1-51 assemble atoms into molecules
52 1-52 before we can make cells, organs, rocks, and everything else
53 1-53 chemistry teaches us the rules for assembling matter. chemistry predicts the properties of this assembled matter and all matter is assembled from atoms.
54 1-54 in this lecture about Chem 1A about Chemistry atoms - the building block. who knew? (and how did we find out)
55 1-55 water 1 mm
56 water nm
57 water nm this is the smallest unit of matter that acts like water.
58 1-58 all of the properties of this 1 mm
59 such as 1-59 freezing point. vapor pressure. density. viscosity. polarity. dielectric constant.
60 are encoded by this tiny thing! nm mass = 3.0 x g
61 1-61 we call it a molecule nm
62 1-62 we call it a molecule nm this is the smallest entity that possesses all of the properties of water.
63 1-63 molecules are made up of atoms an oxygen atom hydrogen atoms
64 1-64 matter comes in 3 flavors: solid liquid gas
65 pure and impure matter: 1-65 pure substances are elements or compounds
66 impure substances are mixtures: 1-66
67 1-67 zoom in on one atom electron proton hydrogen is the simplest atom.
68 1-68 actually, 3 types of subatomic particles in atoms: particle symbol charge electron e or e - -1 proton p or p + +1 neutron n or n 0 0 mass 9.11 x g 1.67 x g 1.68 x g mass (amu)
69 1-69 actually, 3 types of subatomic particles in atoms: 1 e -, 1 p +, 0 n 8 e -, 8 p +, 8 n 11 e -, 11 p +, 12 n
70 1-70 in this lecture about Chem 1A about Chemistry atoms - the building block. who knew? (and how did we find out)
71 1-71 J.J. Thomson discovered the first subatomic particle (1887). proved atoms were divisible. measured mass/charge of electrons won Nobel prize (1906)
72 how did he do it? 1-72 read more about it:
73 how did he do it? 1-73
74 how did he do it? 1-74 anode slits Vtop fluorescent screen cathode (electron source) pair of metal electrodes
75 1-75 Vtop = positive electron beam deflects up.
76 1-76 Vtop = negative electron beam deflects down. Thompson calculates: charge/mass ratio: 1.76 x 10 8 C/g
77 1-77 Vtop = negative electron beam deflects down. Thompson calculates: charge/mass ratio: 1.76 x 10 8 C/g but he doesn t know the mass! so he doesn t know the charge.
78 George Johnstone Stoney came up with the name electron (even before Thomson s experiments - how?!). Greek for amber.
79 1-79 allow me to anticipate your next question: Q: Prof. Penner, is this on the exam? A: yes.
80 Robert Millikan did a wild experiment to at Univ. of Chicago in measured the charge of an electron won the Nobel prize (1923) 1 st president of Caltech (1921).
81 1-81
82 1-82
83 how did he do it? 1-83
84 how did he do it? The experiment :: measured the strength of the electric field required to halt the free fall of the oil drops; :: determined the mass of oil drops from their radii (size) and density. The charge, q, of each oil drop was always a whole-number multiple of C. This is the fundamental charge of a single electron. mg = qe (g is acceleration of gravity, E is the E-field)
85 Millikan x C
86 Millikan Thomson x C (1.76 x 10 8 C/g) -1
87 Millikan Thomson x C (1.76 x 10 8 C/g) x g per electron
88 1-88 in this lecture about Chem 1A about Chemistry atoms - the building block. who knew? (and how did we find out)
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