This document provides instructions and information for a chemistry lesson on acids and bases. It includes: 1. A list of materials needed for the lesson including a textbook and worksheet. 2. Background information on acids and bases including how they can be beneficial or harmful, and how they relate to pH and neutralization. 3. Questions from the worksheet on acids and bases properties and reactions. 4. Notes on corrections to the worksheet questions. 5. An extra credit assignment involving assigning atomic numbers and masses to animal names.

1. You will Need:
1. Acids & Bases Part 2 – Pages
1-8 – Picked up this week
2. Pencil,
3. Textbook pg. 196-197

2. 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

3. 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

4. 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.)

5. 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”

6. 1.Using your Periodic Table as an
Alphabet list:
1.Create a list of animals and
calculate their cage number
and mass

7. Animal Cage Mass of
Name Number Animal
(Atomic #) (Mass #)
Li O N 3 + 8 + 7 = 7 + 16 +14 =
18 27

8. 1. None - unless you have
missing work
2. Acids and Bases – Parts 1 & 2
should be done by the END of
class Today.
3. Atomic Zoo – Extra Credit –
Tuesday - Jan. 8th, 2013
4. Enjoy your Winter Break!!!!!