Physical and Chemical 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 dissolving.

Front

What is a chemical change?

Back

A chemical change is a change that results in the formation of new chemical substances. It involves a chemical reaction and changes the composition of the original substance. Examples include rusting and burning.

Front

Is melting ice cream a physical or chemical change?

Back

Melting ice cream is a physical change.

Front

Is nail rusting a physical or chemical change?

Back

Nail rusting is a chemical change.

Front

What happens during a physical change?

Back

During a physical change, the form of a substance changes, but its chemical identity remains the same.

Front

What happens during a chemical change?

Back

During a chemical change, the substances involved undergo a chemical reaction, resulting in new substances with different properties.

Front

Identify the change: Glass breaking. Is it physical or chemical?

Back

Glass breaking is a physical change.

Front

Is dissolving sugar in water a physical or chemical change?

Back

Dissolving sugar in water is a physical change.

Front

What causes iron to change from shiny to rusty?

Back

Iron changes from shiny to rusty due to a chemical reaction with oxygen and moisture in the air.

Front

What is an example of a physical change?

Back

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