Chemical vs. Physical Changes

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, often with different properties.

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.

Front

Give an example of a chemical change.

Back

Burning wood is an example of a chemical change because it transforms the wood into ash and smoke.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change because it changes from solid to liquid but remains water.

Front

What happens to the molecules during a chemical change?

Back

During a chemical change, the molecules rearrange to form new substances.

Front

What happens to the molecules during a physical change?

Back

During a physical change, the molecules may move closer together or farther apart, but their structure remains the same.

Front

Is blending fruits a chemical or physical change?

Back

Blending fruits is a physical change because the fruits retain their original properties.

Front

What is an indicator of a chemical change?

Back

An indicator of a chemical change can be a change in color, temperature, or the production of gas.

Front

What is the flame test used for?

Back

The flame test is used to identify the presence of certain gases, like hydrogen, by observing the reaction in a flame.

Front

What are the states of matter?

Back

The states of matter are solid, liquid, gas, and plasma.