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Chemistry Vocab
Term | Definition |
---|---|
Atom | the smallest particle of an element; made of electrons, protons, and neutrons |
Collide | To strike or hit something with any amount of force |
Gas | A form of matter with indefinited shape and volume |
Inert | Not chemically reactive; used to describe a substance |
Liquid | A state of matter with a definite volume but no definite shape |
Matter | Anything that has volume and mass |
Molecule | The simplest unit of a chemical compound that can exist; formed when two or more atoms join together chemically |
Pressure | Force exerted on matter through contact with other matter; affects melting and boiling points |
Pure Substance | A single substance, either an element or compound, with definite composition and properties |
Solid | A state of matter with definite volume and shape |
States of Matter | Distinct forms fo matter known in everyday experience; solid, liquid, and gas; also referred to as phases |
Temperature | Average kinetic energy of all the particles in a material; measured by a thermometer in degrees |
Thermal Energy | The total kinetic (motion) energy of the tiny particles that make up matter; the faster the particles move, the warmer the matter becomes |
Vibrate | To move rythmically and steadily; oscillate |
Kinetic Energy | Energy of motion |