A push/pull on an object that is not subject to an equal or opposite push or pull which causes a change in motion.

Two forces acting in opposite directions on an object, resulting in no motion.

The contact force that works against motion.

The unit of measurement for force (N)

A push or pull applied to an object

A motion that has a repeating pattern.

The sum of all forces acting on an object.

The state of being stretched tight.

The measurement of the amount of space between two objects.

The invisible, attractive force between objects.

The amount of matter in an object

The force that attracts objects towards the center of the Earth.

A force that acts on a body moving in a circular path and is directed toward the center around which the body is moving.

A state of matter with no definite volume or shape.

The amount of space an object or substance takes up.

Everything around us that takes up space & has mass

A state of matter with a definite volume but no definite shape.

A state of matter that has definite volume and shape.

The temperature at which phase changes occur.

Matter cannot be created or destroyed in a closed system. Also referred to as the Law of Conservation of Matter.

A substance changes in form but not in chemical composition.

A substance changes to create one or more new substances with properties different than the original substance.