Chemical and Physical Changes

Matter

Anything that has mass and takes up space

Atom

Small particle that is a building block of matter

substance

Matter with a composition that is always the same

Element

Substance that consists of just one type of atom

Compound

Substance containing atoms of two or more different elements chemically bonded together

mixture

Matter that can vary in composition

Heterogeneous mixture

Type of mixture in which the individual substances are not evenly mixed

Homogeneous mixture

Type of mixture in which the individual substances are evenly mixed

dissolve

To form a solution by mixing evenly

physical property

Characteristic of matter that you can observe or measure without changing the identity of the matter

chemical property

A characteristic of matter that can be observed as it changes the different types of matter

mass

The amount of matter in a object

density

The mass per unit volume of a substance

solubility

The ability of one substance to dissolve in another

physical change

A change in the size, shape, form or state of matter in which the matter's identity stays the same

chemical change

A change in matter in which the substances that make up the matter change into other substances with new physical and chemical properties

concentration

The amount of substance in a certain volume