5.P.2.3 Chemical and Physical 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 breaking.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. Examples include burning, rusting, and frying an egg.

Front

What happens to the substance during a physical change?

Back

The substance may change its form or appearance, but its chemical identity remains the same.

Front

What happens to the substance during a chemical change?

Back

The substance undergoes a transformation that changes its chemical identity, resulting in new substances being formed.

Front

Give an example of a physical change.

Back

Making a paper airplane is an example of a physical change.

Front

Give an example of a chemical change.

Back

Frying an egg is an example of a chemical change.

Front

Why is burning leaves considered a chemical change?

Back

Burning leaves is a chemical change because the leaves turn to ashes, indicating a new substance has formed.

Front

What is an indicator of a chemical change?

Back

The formation of gas, change in color, or production of heat are indicators of a chemical change.

Front

What is an example of a different substance being formed?

Back

Wood burning is an example of a different substance being formed.

Front

What observation indicates a chemical change when mixing liquids?

Back

The formation of gas after mixing the liquids indicates a chemical change.