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Unit 1

Unit 1: Classification and States of Matter

TermDefinition
atom A small particle that is the building block of matter.
compound A substance containing atoms of two or more different elements bonded together. (must be two different elements)
element A pure substance that cannot be broken down into simpler substances.
molecule Two or more atoms that are held together by covalent bonds and act as a unit, i.e. O2
kinetic energy Energy an object has due to its motion.
potential energy Stored energy due to the interactions between objects or particles.
thermal energy The result of the motion of all the particles, and the distance and attractions between those particles in the system.
thermal contraction A decrease in a material's volume when the temperature is decreased.
thermal expansion An increase in a material's volume when the temperature is increase.
vaporization The change in state from a liquid to a gas.
Created by: MrsBurton2024
 

 



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