Physical and Chemical Changes

Front

In physical changes, substances might change in __________ but not in __________.

Back

appearance, composition

Front

What caused the piece of iron to change from shiny to rusty?

Back

a chemical reaction

Front

A change in the size, shape, or state of matter is called a __________ change.

Back

physical change

Front

When salt dissolves in water, it is an example of a __________ change.

Back

physical change

Front

Which is the best example of a new substance forming?

Back

lighting a match

Front

Define a physical change.

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Define a chemical change.

Back

A change that results in the formation of new chemical substances.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

What happens to the composition of a substance during a physical change?

Back

It remains the same.