Test review chemistry 8th

Front

What is an element?

Back

A substance made of one type of atom.

Front

What does a compound consist of?

Back

Two or more different atoms chemically combined.

Front

What is a mixture?

Back

A non-uniform combination of particles.

Front

What is a homogeneous mixture?

Back

A mixture that has a uniform composition throughout.

Front

What is the chemical formula for acetic acid?

Back

CH3COOH.

Front

How many oxygen atoms are in CH3COOH?

Back

3.

Front

What is 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 rusting iron an example of?

Back

A chemical change.

Front

What is the difference between a compound and a mixture?

Back

A compound is a chemical combination of elements, while a mixture is a physical combination of substances.