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Acids and Bases

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Multiple Choice

The smallest part of an element is

• proton

• atom

• compound

• mixture

Multiple Choice

Two or more different elements chemically combine to form compounds.

• True

• False

Multiple Choice

A combination of particles of one or more substance that are distributed uniformly throughout another substance is a/an

• Mixture

• Substance

• Solution

Multiple Choice

Which of the following are properties of acids?

• They conduct electricity when dissolved in water

• They taste sour

• They react with metals to produce hydrogen gas

• All of the answer choices are correct

Multiple Choice

Bases have many uses. They are mainly used to make

• cleaning products

• soaps

• concrete

• all of the answer choices

Multiple Choice

If the substance is neutral, what would the pH be?

• 3

• 5

• 7

• 9

• 11

Multiple Choice

Which of the following pH values represents a base?

• 2.1

• 4.6

• 6.8

• 8.1

Multiple Choice

Which is the stronger acid?

• pH 1

• pH 4

• pH 8

• pH 13

Multiple Choice

Which of the following is a base?

• baking soda in water

• orange juice

• vinegar

• lemonade

Multiple Choice

The strongest bases have pH values close to

• 0

• 14

• 7

• 5

Multiple Choice

If an acid is combined with a base of equal strength, the result will most likely be

• a neutral solution.

• a stronger acid.

• impossible to tell without testing the pH.

• a stronger base

Multiple Choice

Which of these pH values represent an acid?

• 4

• 8

• 10

• 12

Multiple Choice

Milk is a very weak acid. What might its pH value be?

• 6.5

• 7.8

• 4.2

• 12.2