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 process that alters the form or appearance of a substance but does not change its chemical composition.

Front

Is rusting of iron a chemical or physical change?

Back

Chemical change.

Front

Is melting ice a chemical or physical change?

Back

Physical change.

Front

What happens to the molecules during a chemical change?

Back

The molecules rearrange to form new substances.

Front

What happens to the molecules during a physical change?

Back

The molecules remain the same but may change in form or appearance.

Front

Is burning wood a chemical or physical change?

Back

Chemical change.

Front

Is dissolving sugar in water a chemical or physical change?

Back

Physical change.

Front

What is an example of a chemical change?

Back

Examples include rusting, burning, and cooking.

Front

What is an example of a physical change?

Back

Examples include melting, freezing, and breaking.