A measure of the average energy of molecular motion in a substance.

The process of changing one state of matter to another by either adding or subtracting heat energy.

The total energy of molecular motion in a substance.

The state of matter that has medium energy, medium particle motion, medium temperature, and medium density.

The state of matter that has the lowest energy, lowest particle motion, lowest temperature, and highest density

The state of matter that has the highest energy, highest particle motion, highest temperature, and lowest density.

The process of turning a gas into a liquid

The process of turning a liquid into a gas

The process of turning a solid into a liquid

The process of turning a liquid into a solid

Any environment or condition that allows mass/matter to go in or come out

Any environment or condition that DOES NOT allow mass/matter to go in or come out.

A fundamental principle of physics that matter can not be created or destroyed. The mass that goes into a reaction must equal the mass that comes out.

A large number that goes in front of a chemical formula and tells you how many molecules of that substance there are in a chemical equation

A small number in a chemical equation that tells you how many of a particular atom is present in a molecule

Another word for equals. Refers to the products produced in a chemical reaction.

The basic unit of an element. The building blocks of matter.

A group of atoms bonded together, representing the smallest unit of a chemical compound that can take part in a chemical reaction

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