Acids And Bases Question Preview (ID: 17730)
Review Questions About Acids And Bases.
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According to the pH scale, which substance has the highest acidity?
a) milk
b) distilled water
c) oven cleaner
d) stomach acid
According to the pH scale, which substance is LESS acidic than acid rain?
a) milk
b) lemon juice
c) stomach acid
d) tomato juice
If you spilled an acid on the floor the best way to clean it up would be to
a) add water to it
b) add salt to it
c) add a base to it
d) use a disposable spong
A neutral solution has
a) no hydroxide ions (OH-)
b) no hydrogen ions (H+)
c) slightly more hydroxide ions than hydrogen ions
d) equal amounts of hydrogen ions and hydroxide ions
A solution with a pH of 2.0 is
a) basic
b) neutral
c) a weak acid
d) a strong acid
According to the pH scale, which substance is the weakest base?
a) soap
b) bleach
c) oven cleanser
d) human blood
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 turns blue, blue paper turns red
b) red paper turns blue, blue paper does not change
c) red paper does not change, blue paper turns red
d) red paper does not change, blue paper does not change
According to the pH scale, which substance has the lowest hydrogen ion concentration? (the least H+)
a) tomato juice
b) oven cleaner
c) distilled water
d) stomach acid
According to the pH scale, which substance is more acidic than tomato juice? (use your pH scale)
a) milk
b) acid rain
c) lemon juice
d) ammonia solution
Which of the following is a basic pH?
a) 5.0
b) 6.0
c) 7.0
d) 8.0
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 turns red
b) red paper does not change, 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
What is the missing part of the chemical equation? ___________ + base --- salt + water
a) pH
b) acid
c) base
d) H20
An acid has
a) low concentrations of hydrogen ions (H+)
b) high concentrations of hydrogen ions (H+)
c) no hydrogen ions (H+)
d) no hydroxide ions (OH-)
Which of the following values of pH will change blue litmus paper red?
a) 1.0
b) 7.0
c) 8.2
d) 12.6
Which of the following values of pH will change red litmus paper blue?
a) 3.1
b) 6.2
c) 7.0
d) 13.5
Which of the following is a value from the pH scale?
a) 14.5
b) 12.0
c) -7.0
d) -14.0
A solution with a pH of 8.0 is
a) neutral
b) acidic
c) a weak base
d) a strong base
What is pH a measure of?
a) density
b) solute concentration
c) hydrogen-ion concentration
d) ion concentration
Distilled water will
a) change blue litmus paper to red.
b) change red litmus paper to blue.
c) not change red or blue litmus paper.
d) cannot be tested using litmus paper.
What is the missing part of the chemical equation? acid + base-- salt + ________
a) H2O
b) pH
c) gas
d) salt
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