1. You will Need:
1. Acids & Bases Part 2 – Pages
5-8 – Bookshelf, Please
staple to pgs 1-4
2. Pencil, Colored Pencils
3. Textbook pg. 196-197

2. 1. Which ION is the pH scale measuring?
2. What is the number that represents the
strongest base on the pH scale?
3. In an alkaline solution, what type of
IONS are present?
4. What colors are associated with acids?
5. What number on the pH scale indicates
the strongest acid?
6. What type of substance has very few
hydronium ions?

3. 7. What is the number range for acids on
the pH scale?
8. What colors are associated with
bases?
9. What type of substance (acid or base)
is slippery?
10. What type of substance (acid or base)
turns bromothymol blue, green?
11. If a substance registers a 4 on the pH
scale, is it neutral, acid or base?
12. A reading greater than 7 indicates
your solution is ___________?

4. 13. Protium, Dueterium and Tritium are all
isotopes of Hydrogen, Why?
14. What kind of bond does HCl form?
15. Hydrogen Peroxide (H2O2) forms what
kind of bond? How do you know?

5. 13. Protium, Dueterium and Tritium are all
isotopes of Hydrogen, Why?
14. What kind of bond does HCl form?
15. Hydrogen Peroxide (H2O2) forms what
kind of bond? How do you know?
16. The repeating pattern of NaCl form a
crystal ____________?
+ - + - + - + - +
- + - + - + - + -
17. What is the most common isotope for
Silicon?

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 (taped to paper)
1. Mouth wash
2. Coffee
3. Lysol Cleaner
4. Vinegar
5. Ammonia
6. 7up

8. 1.Our world needs to stay within the
“normal” range of pH in order to be
healthy.
2.Both Acids and Bases can be corrosive.
3.Acids and Bases can be beneficial and
harmful.
4. Acids and Bases work just like positive
and negative numbers.
5.Add an Acid (H+) to a Base (OH-) they
can neutralize each other.
6.However, we NEVER want to do this with
very strong acids or bases or explosions
would occur.
http://www.youtube.com/watch?v=kcDSngXldB0

9. 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

10. 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

11. 9.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?
A.When both sub. had a pH value of about 3
on the 0-14 paper
B.When both sub. had a pH value of about 6
on the 0-14 paper
C.When both sub. had a pH value of about 9
on the 0-14 paper
D.When on substance had a pH value of
about 5 and the other had a pH value
about 7 on the 0-14 paper.

12. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
When should we retest to tell a
DIFFERENCE between substances?

13. 9.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?
A.When both sub. had a pH value of about 3
on the 0-14 paper
B.When both sub. had a pH value of about 6
on the 0-14 paper
C.When both sub. had a pH value of about 9
on the 0-14 paper
D.When on substance had a pH value of
about 5 and the other had a pH value
about 7 on the 0-14 paper.

14. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
When should we retest to tell a
DIFFERENCE between substances?

15. 9.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?
A.When both sub. had a pH value of about 3
on the 0-14 paper
B.When both sub. had a pH value of about 6
on the 0-14 paper
C.When both sub. had a pH value of about 9
on the 0-14 paper
D.When on substance had a pH value of
about 5 and the other had a pH value
about 7 on the 0-14 paper.

16. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
When should we retest to tell a
DIFFERENCE between substances?

17. 9.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?
A.When both sub. had a pH value of about 3
on the 0-14 paper
B.When both sub. had a pH value of about 6
on the 0-14 paper ?
C.When both sub. had a pH value of about 9
on the 0-14 paper
D.When on substance had a pH value of
about 5 and the other had a pH value
about 7 on the 0-14 paper.

18. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
When should we retest to tell a
DIFFERENCE between substances?

19. 9.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?
A.When both sub. had a pH value of about 3
on the 0-14 paper
B.When both sub. had a pH value of about 6
on the 0-14 paper ?
C.When both sub. had a pH value of about 9
on the 0-14 paper
D.When on substance had a pH value of
about 5 and the other had a pH value
about 7 on the 0-14 paper.

20. 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
When should we retest to tell a
DIFFERENCE between substances?

21. 9.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?
A.When both sub. had a pH value of about 3
on the 0-14 paper
B.When both sub. had a pH value of about 6
on the 0-14 paper ?
C.When both sub. had a pH value of about 9
on the 0-14 paper
D.When on substance had a pH value of
about 5 and the other had a pH value
about 7 on the 0-14 paper.

22. 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.
12. 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.)

23. 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”

24. 1. ½ page of notes for Test #4
Tomorrow – front side only,
done by hand.
2. Acids and Bases – Parts 1 & 2
should be done by the
beginning of class on Friday.