Chemistry Quiz

Chemistry is

• the mystical search for the elixir of life.

• speculation about the nature of matter.

• the study of matter and the changes it undergoes.

• none of these

Mass is

• the measure of the amount of matter.

• the measure of the volume of matter.

• the measure of the force of gravity on matter.

• the measure of the amount of space that matter occupies.

On Mars gravity is one-third that on Earth. What would be the weight on Mars of a person who has a weight of 150 pounds (lb) on Earth?

• 150 lb

• 450 lb

• 300 lb

• 50 lb

On Mars, gravity is one-third that on Earth. What would be the mass on Mars of a person who has a mass of 90 kilograms (kg) on Earth?

• 90 kg

• 30 kg

• 180 kg

• 270 kg

Which of the following is a physical change?

• Ice melts at 0°C.

• Water is decomposed by electricity into hydrogen and oxygen.

• A red substance is decomposed by heat to form mercury and oxygen.

• Carbon combines with oxygen to form carbon dioxide.

Which of the following is a chemical property?

• Sugar dissolves in water.

• Gasoline and water do not mix.

• Potassium reacts with water to form potassium hydroxide.

• Sugar is a solid at room temperature.

The physical state that retains both shape and volume is

• element.

• gas.

• liquid.

• solid.

A gas is characterized by a(n)

• indefinite shape and indefinite volume.

• definite shape and indefinite volume.

• definite shape and definite volume.

• indefinite shape and definite volume.

A substance that cannot be broken down by chemical means into simpler substances is called a(n)

• mixture.

• element.

• compound.

• solid.

What is the chemical symbol for potassium?

• Pu

• P

• Po

• K