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Physical Science 1

TermDefinition
Atom The basic from which all elements are made; the smallest particle of a element that has the properties of that element
Boil The changes in the state from a liquid to a gas
Condense The change in state from a gas to a liquid
Evaporate the process by which molecules at the surface of a liquid absorb
Freeze The temperature at which a liquid freezes
Gas A state of matter with no definite shape or size
Inert Having having little or no ability to react
Kinetic energy Energy that an object has due to its motion
Liquid A state of matter that has no definite shape but has a definite volume
Matter Anything that has mass or takes up space
Melt The temperature at which a substance changes from a solid to a liquid
Molecule A neutral group of two or more atoms held together by covalent bonds
Particle Smallest possible unit of matter
Particle motion Ways in which atoms, ions, or molecules move
Phase A physically distinctive form of matter, such as a solid, liquid, or gas
Phase change A change from one state( solid or liquid or gas) to another without a change in chemical composition
Pressure The physical Force exerted on an object
Pure substance A substance made of only one kind of matter and having definite properties
Solid A state of matter that has a definite shape and volume
System A group of parts that work together as a whole
Temperature A measure of the average energy of motion of the particles of a substance
Thermal energy The total kinetic and potential energy of all the particles of a object
Vapor Gaseous state of a substance that is a liquid or a solid at room temperature
Conduction The transfer of a thermal energy from one object to another
Convection The transfer of thermal energy by the movement of fluid
Radiation The transfer of energy by electromagnetic waves
Created by: user-1717819
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