Changes in Energy Vocabulary

The smallest particle of an element; made of electrons, protons and neutrons

• Atom

• Molecule

• Compound

• Pure Substance

To strike or hit something with any amount of force.

• Collide

• Repel

• Attract

• Inert

A state of matter with indefinite volume and shape

• Gas

• Liquid

• Solid

• States of Matter

Not chemically reactive; used to describe a substance

• Inert

• Gas

• Liquid

• Matter

Energy of Motion

• Kinetic Energy

• Potential Energy

• Thermal Energy

• Temperature

A state of matter with definite volume but no definite shape

• Liquid

• Solid

• Gas

• Inert

Anything that has volume and mass

• Matter

• Solid

• Liquid

• Gas

The simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically.

• Molecule

• Compound

• Atom

• Element

Force exerted on matter through contact with other matter; affects melting and boiling points.

• Pressure

• Temperature

• Kinetic Energy

• Matter

A single substance, either an element or compound, with definite composition and properties.

• Pure Substance

• Molecule

• Liquid

• Compound