8th Grade Matter Review

Front

A 'group' is a ____________ on the periodic table.

Back

column

Front

A substance that undergoes a __________ change is still the same substance after the change.

Back

physical

Front

A 'period' is a ____________ on the periodic table.

Back

row

Front

As a substance is heated up, what happens to its molecules?

Back

They move faster, they get farther apart, they may change state, all answers are correct.

Front

This picture represents which of the following?

Back

mixture of elements

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded.

Front

What happens during a chemical change?

Back

The composition of the substance changes, forming new substances.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.