Matter Matters

Front

What causes a change in the state of matter?

Back

Temperature is the primary factor that causes a change in the state of matter.

Front

What happens to water when heat energy is added?

Back

When heat energy is added to water, it can change from a liquid to a gas (steam).

Front

What is the process called when water disappears from a glass in a science lab?

Back

The process is called evaporation.

Front

Is cutting an orange a physical change?

Back

True, cutting an orange is a physical change.

Front

What can be observed to determine a physical property?

Back

Physical properties can be observed with the senses, such as sight, smell, taste, touch, and hearing.

Front

What are the three main states of matter?

Back

The three main states of matter are solid, liquid, and gas.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an example of a physical change?

Back

Examples of physical changes include melting ice, boiling water, and dissolving sugar in water.

Front

What is the boiling point of water at sea level?

Back

The boiling point of water at sea level is 100 degrees Celsius (212 degrees Fahrenheit).

Front

What happens to the molecules of a substance when it is heated?

Back

When a substance is heated, its molecules gain energy and move faster, which can lead to a change in state.