Physical and Chemical Changes

Front

What is another name for a chemical change?

Back

Chemical reaction.

Front

Which of these items would most likely rust: iron, plastic, or glass?

Back

Iron.

Front

What state of matter takes the shape of the container it's in?

Back

Liquid.

Front

What state of matter spreads apart or squeezes together to fit into a space?

Back

Gas.

Front

What is an example of a liquid turning into a gas?

Back

Evaporation, such as water turning into steam.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

What are the signs of a chemical change?

Back

Color change, gas production, temperature change, and formation of a precipitate.

Front

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

Back

A physical change does not change the substance's chemical identity, while a chemical change does.

Front

What happens to the molecules in a solid when it melts?

Back

The molecules gain energy and move apart, transitioning to a liquid state.