The scale used to measure how acidic or basic a substance is

A negatively charged subatomic particle

Anything that has mass and takes up space

The smallest unit of matter

When two or more substances combine they form this...

A particle with no charge

A form of matter that keeps its shape and size

A change in something's chemical properties

A mixture that is a liquid

Letter and numbers that tell the kinds of matter in a molecule

Center of an atom

A form of matter that does not keep its shape or size

Combination of things that CAN be separated

A form of matter that does NOT keep its shape but KEEPS the same size

A change in something's size, shape, or state of matter