2.1 Vocabulary

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

Movement of energy from one system to another

Energy transferred between two objects of different temperatures that moves continually in a predictable pattern, from a warmer site to a cooler site, until all sites have reached the same temperature

The energy of motion, meaning it’s the energy an object has because it is moving

Anything that has volume and mass

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

A force that resists the motion of two surfaces sliding across one another

Energy that is stored in a system or object

Matter are solid, liquid, and gas, defined by their shape and volume

Average kinetic energy of all the particles in a material; measured by a thermometer in degrees (usually degrees Celsius or degrees Fahrenheit)

The total kinetic (motion) energy of the tiny particles that make up matter; the faster the particles move, the warmer the matter becomes Energy

The sum of all the kinetic energy (KE) and potential energy (PE) that is found within a substance