1. Be respectful – no electronics please!
Announcements
No Lab on Monday (Labor Day!)
Textbook Assignment 1 Due tomorrow (see pg. 15)
Pre-Lecture Assignments & HW
Post-Lect 2/Pre-Lect 3 - Tuesday 8:00 am
HW 1: Wednesday 10:00 pm
Post-Lect 3/Pre-Lect 4 - Thursday 8:00 am

2. LON-CAPA Electronic Homework
Receive no credit after due date.
Individualized assignments.
Show them Lon-Capa!!!!!!!!!!!!!!!!!!!

3. Syllabus Page 11

4. Friday Sections Smaller groups, more details in solving problems.
You must take an active role.
Textbook Ch. 2, 3, 5 HW due tomorrow (p. 15 of Lab Book lists the exact problems to be completed)

5. Chemistry 101 Slower pace after next week
Office hours – 2026 Chemistry Annex or Chem Library Conference Room
12-1 pm Tuesdays and Thursdays
1:30-3:00 pm Wednesdays
3-3:30 pm Tuesdays & Thursdays
By appointment

6. Lectures Provide a “big picture” Lecture Syllabus Interactive
How do we think about “science”?
How do we solve a problem?
Lecture Syllabus
Page 15 of Lab Book
Interactive
I expect and encourage questions.
Participation expected through clickers and discussion.

7. Clicker Points
Participation Points – answer at least 75% of the questions per lecture
0.5 points per lecture
Capped at 10 points (24 lectures w/ clickers)
Bonus Points – earn 0.1 points for every question you answer correctly
Starts Next Tuesday

8. Chemistry 101 2021 Chemistry Annex (Chemistry Learning Center)
Walk in tutors
Office hours
Reference materials

9. General Advice…

10. To: emccarr2@illinois.edu
From:
I dont get problem 3
Srsly, plz help thx ~J

11. Email Advice Acknowledge instructor’s name. Put your name.
account if possible. (otherwise put netid after name)
Do not use “text message” code.
Put your section.
Do not erase the message I sent previously (the record).

12. To: emccarr2@illinois.edu From: jdoe25@illinois.edu
Hi Elise,
I am having trouble understanding problem #3 of the Additional Questions on pg. 23 of the Lab Book. How am I supposed to make my drawings for each measurement? Can you please give me some guidance? Thanks!
-Jane (jdoe25, ADM, Chem 101)

14. Canine Nosework

15. Clicker #1 - Discussion
How many of the particle diagrams to the right represent mixtures? 2 3 4 5 6
In your notes, write 1-2 sentences explaining your reasoning.

16. Atomic Element

17. Molecular Elements

19. Compounds

20. Compounds

21. Homogeneous Mixtures

22. Heterogenous Mixtures

23. Everybody writes: Explain at the particle level why each of these is true & draw a particle picture in your notes.
All compounds are molecules, but not all molecules are compounds.
A compound is never a mixture, but a mixture can contain a compound.
It is possible that a substance is a mixture but does not contain a compound.

24. Chemical Reaction – A Chemical Change
BOOM!

25. Clicker #2 - Demonstration
How many of the cups below contain heterogeneous mixtures? 1 2 3 4
More information needed

26. Clicker #3 - Demonstration
How many of the cups below contain homogeneous mixtures? 1 2 3 4
More information needed

27. Periodic Table

28. Periodic Table

29. By the Exam…
Know the polyatomic ions and charges (Practice Periodic Table).
Know common ions and symbols (Practice Periodic Table).
Know prefixes (Table 5.3).

30. Some Polyatomic Ions (Memorize! Table 5.5 pg. 125)
Ammonium
NH4+
Sulfate
SO42-
Hydroxide
OH-
Sulfite
SO32-
Nitrate
NO3-
Phosphate
PO43-
Nitrite
NO2-
Phosphite
PO33-

31. Nonmetal-nonmetal Prefixes (Memorize – Table 5.3 pg. 119)
(not first atom)
Mono 6
Hexa 2 Di 7
Hepta 3
Tri 8
Octa 4
Tetra 9
Nona 5
Penta 10
Deca