Chapter 9 Key Terms

Question 1

Any compound that increases the number of hydronium ions when dissolved in water.

Answer 1

Acid

Question 2

A compound that can reversibly change color depending on conditions such as pH

Answer 2

Indicator

Question 3

A substance that dissolves in water to give a solution that conducts an electric current

Answer 3

Electrolyte

Question 4

Any compound that increases the number of hydroxide ions when dissolved in water

Answer 4

Base

Question 5

A value that is used to express the acidity or basicity (alkalinity) of a system; each whole number on the scale indicates a tenfold change in acidity.

Answer 5

pH

Question 6

The reaction of the ions that characterize acids and the ions that characterize bases to form water molecules and a salt

Answer 6

Neutralization Reaction

Question 7

An ionic compound that forms when a metal atom or a positive radical replaces the hydrogen of an acid

Answer 7

Salt

Question 8

A substance that is used as a cleaner and that dissolves in water.

Answer 8

Soap

Question 9

A water-soluble cleanser that can emulsify dirt and oil

Answer 9

Detergent

Question 10

A chemical substance that kills harmful bacteria or viruses

Answer 10

Disinfectant

Question 11

A chemical compound used to whiten or make lighter, such as hydrogen peroxide or sodium hypochlorite

Answer 11

Bleach

Question 12

A weak base that neutralizes stomach acid

Answer 12

Antacid