Chemical and Physical Changes

Front

What is the melting point?

Back

The temperature at which a solid becomes a liquid; it is a physical property.

Front

What happens when milk sours?

Back

It undergoes a chemical change due to the action of bacteria.

Front

Which example best describes a physical change?

Back

An ice cube melting.

Front

What is a physical change?

Back

Any change in the state of matter of a substance.

Front

What is a physical property?

Back

A characteristic of a substance that can be observed without changing its chemical composition.

Front

What is an example of a chemical change?

Back

Iron rusting.

Front

What is flammability?

Back

A chemical property that describes how easily a substance can catch fire.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is an example of a physical property?

Back

Colour.

Front

What happens during a chemical change?

Back

The chemical composition of a substance changes, resulting in new substances.