5th Grade Physical and Chemical Changes

Front

What is a physical change?

Back

A physical change is a change that affects one or more physical properties of a substance without altering its chemical composition. Examples include melting, freezing, and dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and includes processes like rusting, burning, and baking.

Front

What are some clues that a chemical change has occurred?

Back

Clues that a chemical change has occurred include color change, production of gas, formation of a precipitate, and change in temperature.

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 results in new substances being formed.

Front

What happens during the melting process?

Back

During melting, a solid changes into a liquid as it absorbs heat energy.

Front

What happens during the freezing process?

Back

During freezing, a liquid changes into a solid as it loses heat energy.

Front

What is evaporation?

Back

Evaporation is the process by which liquid water changes into water vapor (gas) when it is heated.

Front

What is condensation?

Back

Condensation is the process by which water vapor (gas) cools and changes back into liquid water.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

How can you separate a mixture of sand and water?

Back

You can separate a mixture of sand and water by filtering, which allows the water to pass through while trapping the sand.