Name:_____________________________ Date:___________ Class:______________
What do You Know About Acids and Bases?
Letter
Matching
1. Acid
A. To mix acids and bases to cancel each
other out and make water and salt
B. A compound that adds H+ ions to
water
2. Base
3. Neutral
4. Neutralize
C. Equal number of H+ and OH- ions;
water is an example
D. A compound that adds OH- ions to
water.
5. Acid Rain
E. When pollution causes rain to have a
pH less than 5.6.
6. pH
F. The measure of how acidic or basic a
solution is
7. Salt Water
G. A compound that adds a few OH- ions
to water
8. Strong Acid
H. The product of a neutralization reaction
between an acid and a base
9. Weak Base
I. A compound that adds a few H+ ions to
water
10. Weak Acid
J. A compound that adds a lot of H+ ions
to water.
Is it an Acid or a Base?
Circle the acids and underline the bases
11. HCl
17. H2CO3
23. apple juice
12. Mg(OH)2
18. NaOH
24. lemonade
13. H3PO4
19. Al(OH)3
25. soap
14. KOH
20. HBr
26. laundry detergent
15. Ca(OH)2
21. H2SO4
27. soft drinks
16. LiOH
22. H2O
28. bathroom cleaner
Acids or Bases? Identify the
following with an
A for Acid or B for Base
29. pH of 1 to 7
30. Feels slippery
31. pH of 7 to 14
32. Has more OH- ions
33. Has more H+ ions
34. Tastes sour
Acid-Base Practice
1 A student wearing goggles, gloves, and an apron begins a simple activity to determine the pH of corrosive
solutions. Before the activity, what other safety measures should the student follow?
A Identify the locations of eye wash, shower, and fire equipment
B Check and set clocks and record the beginning time
C Review the proper method of fire-polishing glass tubing
D Arrange the equipment in the work area alphabetically
2 Hard water has a pH higher than 7 and an abundance of calcium and magnesium salts. Which of the
following would be the best cleaning solution for removing hard-water residue from drinking glasses?
A A mild acid such as vinegar
B A strong solution such as ammonia
C A hot solution such as baking soda in boiling water
D A strong base such as sodium hydroxide
3 Two clear solutions are placed in separate beakers. The first solution has a pH of 4, and the pH of the second
solution is unknown. If the two solutions are mixed and the resulting pH is 5, the second solution must have –
A fewer suspended solids
B a lower temperature
C more dissolved salt (NaCl) particles
D a higher concentration of OH-ions
Properties of Some Solutions
Solution
Electrical
Conductivity of
Solution
Original Color of
Litmus Paper
1
2
3
4
Very high
Low
Moderate
Very high
Red
Blue
Red
Blue
Color of Litmus
Paper After
Dipping in
Solution
Blue
Red
Red
Red
pH
10.0
6.5
5.4
2.0
4 The table shows data from an investigation designed to find a liquid solution that is both an acid and a strong
electrolyte. Based on the data, a solution that is both an acid and a strong electrolyte is –
A Solution 1
B Solution 2
C Solution 3
D Solution 4
Venn Diagram
Acids
Bases