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Physical Science


atom the smallest particles of matter (the building blocks of life
atomic mass the combined mass of both the protons and the neutrons in an atom
atomic number the number of protons in the nucleus of an atom
electron the subatomic particle around the outside of an atom that has a negative charge
element a pure substance that cannot be broken down into other substances
law of conservation of mass the law that states that matter cannot be created nor destroyed
matter anything that has mass and takes up space (volume)
molecule a particle made of two or more elements bonded together
neutron the subatomic particle in the nucleus of an atom that has NO charge
proton the subatomic particle in the nucleus of an atom that has a positive charge
sublimation the process of a solid changing directly into a gas
evaporation the process of a liquid changing into a gas
condensation the process of a gas changing into a liquid
Created by: cwall