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Acids And Bases
Test Description: Review questions about acids and bases.
Instructions: Answer all questions to get your test result.
1) A solution with a pH of 8.0 is
A
neutral
B
a strong base
C
a weak base
D
acidic
2) Which of the following is a value from the pH scale?
A
-7.0
B
14.5
C
12.0
D
-14.0
3) Which of the following values of pH will change red litmus paper blue?
A
7.0
B
3.1
C
13.5
D
6.2
4) Which of the following values of pH will change blue litmus paper red?
A
7.0
B
8.2
C
12.6
D
1.0
5) An acid has
A
no hydrogen ions (H+)
B
low concentrations of hydrogen ions (H+)
C
no hydroxide ions (OH-)
D
high concentrations of hydrogen ions (H+)
6) What is the missing part of the chemical equation? ___________ + base --- salt + water
A
pH
B
acid
C
H20
D
base
7) Which of the following is a basic pH?
A
8.0
B
7.0
C
5.0
D
6.0
8) What will be the outcome of putting litmus paper into rainwater? (look at the pH on your pH scale!)
A
red paper turns blue, blue paper does not change
B
red paper does not change, blue paper does not change
C
red paper turns blue, blue paper turns red
D
red paper does not change, blue paper turns red
9) According to the pH scale, which substance is more acidic than tomato juice? (use your pH scale)
A
lemon juice
B
acid rain
C
milk
D
ammonia solution
10) According to the pH scale, which substance has the lowest hydrogen ion concentration? (the least H+)
A
distilled water
B
stomach acid
C
tomato juice
D
oven cleaner
11) What will be the outcome of putting litmus paper into a mixture of equal parts lemon juice and ammonia solution? (what happens when you mix equal acids and bases with the same strength?)
A
red paper does not change, blue paper turns red
B
red paper turns blue, blue paper turns red
C
red paper turns blue, blue paper does not change
D
red paper does not change, blue paper does not change
12) According to the pH scale, which substance is the weakest base?
A
human blood
B
soap
C
bleach
D
oven cleanser
13) A solution with a pH of 2.0 is
A
a strong acid
B
basic
C
a weak acid
D
neutral
14) A neutral solution has
A
slightly more hydroxide ions than hydrogen ions
B
no hydrogen ions (H+)
C
equal amounts of hydrogen ions and hydroxide ions
D
no hydroxide ions (OH-)
15) If you spilled an acid on the floor the best way to clean it up would be to
A
add salt to it
B
add a base to it
C
use a disposable spong
D
add water to it
16) According to the pH scale, which substance is LESS acidic than acid rain?
A
milk
B
stomach acid
C
lemon juice
D
tomato juice
17) According to the pH scale, which substance has the highest acidity?
A
milk
B
distilled water
C
oven cleaner
D
stomach acid
18) What is pH a measure of?
A
hydrogen-ion concentration
B
ion concentration
C
solute concentration
D
density
19) Distilled water will
A
cannot be tested using litmus paper.
B
change red litmus paper to blue.
C
not change red or blue litmus paper.
D
change blue litmus paper to red.
20) What is the missing part of the chemical equation? acid + base-- salt + ________
A
H2O
B
gas
C
salt
D
pH
*select an answer for all questions
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