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PH Practice (7th Grade)
Test Description: A basic level review of acids and bases.
Instructions: Answer all questions to get your test result.
1) What substance is a strong base?
A
pH 6 (chicken soup)
B
pH 9 (baking soda)
C
pH 13 (drain cleaner)
D
pH 1 (vinegar)
2) What number is the strongest acid on the pH scale?
A
0
B
10
C
14
D
5
3) What number is the strongest base on the pH scale?
A
14
B
4
C
8
D
0
4) What chemical makes something acidic?
A
H+ (hydrogen ion)
B
OH- (hydroxide)
C
CO2 (carbon dioxide)
D
H2O (water)
5) What chemical makes something basic?
A
H2O (water)
B
OH- (hydroxide)
C
H+ (hydrogen ion)
D
CO2 (carbon dioxide)
6) Which substance is a weak acid?
A
pH 6 (chicken soup)
B
pH 2 (soda)
C
pH 7 (water)
D
pH 10 (hand soap)
7) Which numbers on the pH scale are acidic?
A
0 - 6
B
0 - 14
C
7
D
8 - 14
8) Which numbers on the pH scale are basic or alkaline?
A
0 - 6
B
0- 14
C
8 - 14
D
7
9) What is neutral on the pH scale?
A
0 - 14
B
7
C
0 - 6
D
8 - 14
10) Which substance is a strong acid?
A
pH 6.5 (milk)
B
pH 1 (battery acid)
C
pH 10 (hand soap)
D
7.4 (blood)
11) Coffee has a pH of 5. What would this be on the pH scale?
A
neutral
B
acidic
C
basic
12) Orange juice has a pH of 3. What would this be on the pH scale?
A
basic
B
acidic
C
neutral
13) Milk has a pH of 7. What would this be on the pH scale?
A
basic
B
acidic
C
neutral
14) Ammonia has a pH of 11. What would this be on the pH scale?
A
basic
B
neutral
C
acidic
*select an answer for all questions
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