Focus On Physical Science: California Grade 8

Chapter 9: Acids and Bases in Solution

Math Practice

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1.
If human saliva has a pH of 6.5 and human blood has a pH of 7.5, find the difference in acidity.
A)6.5 times more acidic
B)1 time more acidic
C)10 times more acidic
D)7.5 times more acidic
2.
Find the difference in acidity between Milk of Magnesia that has a pH of 10 and baking soda that has a pH of 8.
A)2 times more acidic
B)100 times more acidic
C)10 times more acidic
D)8 times more acidic
3.
If distilled water has a pH of 7 and drinking water has a pH of 8, find the difference in acidity.
A)1 time more acidic
B)10 times more acidic
C)7 times more acidic
D)8 times more acidic
4.
Find the difference in acidity between soda lye that has a pH of 14 and baking soda that has a pH of 8.
A)14 times more acidic
B)6 times more acidic
C)8 times more acidic
D)1,000,000 times more acidic
5.
If limewater has a pH of 12 and limes have a pH of 2, find the difference in acidity.
A)10,000,000,000 times more acidic
B)10 times more acidic
C)12 times more acidic
D)2 times more acidic
6.
Find the difference in acidity between distilled water that has a pH of 7 and grapefruit juice that has a pH of 3.
A)7 times more acidic
B)4 times more acidic
C)10,000 times more acidic
D)3 times more acidic
7.
If grapefruit juice has a pH of 3 and orange juice has a pH of 4, find the difference in acidity.
A)1 time more acidic
B)10 times more acidic
C)3 times more acidic
D)4 times more acidic
8.
Find the difference in acidity between eggs that have a pH of 8 and white bread that has a pH of 6.
A)6 times more acidic
B)2 times more acidic
C)8 times more acidic
D)100 times more acidic
9.
If stomach juice has a pH of 2 and drinking water has a pH of 8, find the difference of acidity.
A)2 times more acidic
B)6 times more acidic
C)8 times more acidic
D)1,000,000 times more acidic
10.
Find the difference of acidity between a lime that has a pH of 2 and lemon juice that has a pH of 2.
A)6 times more acidic
B)2 times more acidic
C)They have the same acidity.
D)4 times more acidic
Grade 8
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