5.P.2.3 Chemical and 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 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

An example of a chemical change is an apple turning brown.

Front

Give an example of a physical change.

Back

An example of a physical change is ice melting into water.

Front

What happens during rusting?

Back

Rusting is a chemical change that occurs when iron reacts with oxygen and moisture, forming iron oxide.

Front

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

Back

A chemical change results in the formation of new substances, while a physical change does not change the substance's chemical identity.

Front

What is an indicator of a chemical change?

Back

An indicator of a chemical change can include color change, gas production, or the formation of a precipitate.

Front

What happens to leaves when they burn?

Back

When leaves burn, they undergo a chemical change and turn to ashes.

Front

What is an example of a substance being formed?

Back

An example of a substance being formed is wood burning.

Front

What role does heat play in physical changes?

Back

Heat can cause physical changes by adding or removing energy, such as melting or freezing.