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Phase Change

Matter, Molecules, Energy & more

TermDefinition
solid a state of matter that has a definite shape
liquid A state of matter that has no definite shape but has a definite volume.
gas A state of matter with no definite shape or volume
condensation The change of a substance from a gas to a liquid
evaporation change of a substance from a liquid to a gas
melting change of a substance from a solid to a liquid
freezing The change of a substance from a liquid to a solid
atom the smallest unit of an element
freedom of movement the way molecules in a substance move around relative to each other
kinetic energy the energy that an object has because it is moving
molecule A group of atoms joined together in a particular way
molecular attraction a pull between two molecules that is always the same for a substance
phase a noticeably different form or state of the same substance
temperature a measure of how hot or cold something is
viscosity a liquid's resistance to flowing
mass the measure of the amount of matter in a body
weight the measure of the amount of force acting on a mass due to the acceleration due to gravity
density the mass per unit volume of a substance or object.
mixture matter that can vary in composition
substance matter with a composition that is always the same
Popular Physical Science sets

 



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