1. Today in Chemistry
You will Need:
2)Pencil, Colored Pencil
3)Log #4 - update
4)Acids and Bases Part 2
Bookshelf – Do Not staple
5)Student Self Assesment –
Bookshelf
6) Acids & Bases – Part 1
(picked up last week)
7)Periodic Table

2. Today in Chemistry
Test Corrections + Student
Assessment – Due Thur.
•Retakes offered Friday at
Lunch,
•Monday, April 30th before
school and at lunch
•Tuesday, May 1st before
school and at lunch

3. A positively or negatively
ION: charged atom/molecule
pH Measures the # of H+ ions in a
solution (Potential Hydrogen Ions)
Scale:
ACID 7 BASE
0-6.9 NEUTRAL 7.1-14

4. Base
Acid
Both

5. Word Bank:
base, pH,
salt, acid,
pH neutral

6. Material Manager:
1. One Zip Log Bag with
supplies
2. Each person needs 7 test
strips
3. Each person need 6 pieces
of tape about 2cm long.

7. Predict Actual Result
Solution Acid or pH pH Strip
Base Value
1. Mouthwash
1. Coffee
1. Lysol Cleaner
4. Vinegar
1. Ammonia
6. 7up

8. 8. Bleach has a pH of about 13. If you
mix a solution of 50% bleach and
50% water, what would be true
about the pH of a the mixture?
A.It would be less than 7
B.It would be between 7 and 13
C. It would be greater than 13
D. There is not enough info to solve

9. 1.Suppose you have already compared the
pH values of two substance using 0-14 pH
paper. When would a follow-up test using
4.5-7.5 paper be most helpful?
C.When both sub. had a pH value of about 3
on the 0-14 paper
D.When both sub. had a pH value of about 6
on the 0-14 paper
E.When both sub. had a pH value of about 9
on the 0-14 paper
F.When on substance had a pH value of
about 5 and the other had a pH value
about 7 on the 0-14 paper.

10. 10. Suppose you had needed to
neutralize a strong acid (pH2).
Describe 2 ways you could do this
safely.
11. Explain how OH- values and H+
values determine Acids and Bases.
5. Why is it important to be careful
with the things that we put down the
drain or that we let evaporate into
our air? (3-4 sent.)

11. 1.Work on Acids and Bases Parts 1
& 2 questions
#22 – has two answers
#25 (NH4)2SO4
#24 “C” is listed twice –
2nd one should be a “D”

12. 1. Periods 1,3,5,6,8 – Acids &
Bases due Friday
2. Period 2 – Acids & Bases due
Monday – Apr. 30
3. Cumulative STAR Cards Quiz
#4 – 1-101 – Tomorrow
4. Test # 3 corrections and self
assess.- Due Thur.