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Physical Science 1

TermDefinition
Atom The basic particle from which are all elements are made; the smallest particle of an element that has properties of that element
Boil The change in state from a liquid to gas
Condense The change in state from a gas to liquid
Evaporate The process by which molecules at the surface of a liquid absorb enough energy to change a gas
Freeze The temperature at which liquid freezes
Gas A state of matter with no shape or volume
Inert 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 tat has mass and takes up space
Melt The temperature at which substance changes from a solid to 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 solid, liquid, or gas.
Phase change A change from one state (Solid liquid or gas) to another without change in chemical composition
Pressure The physical force exerted of an object
Pure Substance A substance made only of one kind of matter and having definite properties
Solid A state of matter that has 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 substances
Thermal Energy the total kinetic and potential energy of all particles pf an object
Vapor gaseous state of a substance that is a liquid or a solid at room temperature
Conduction the transfer of thermal energy from one object to another
Convection the transfer of thermal energy by the movement o fluid
Radiation the transfer of energy by electromagnetic waves
Created by: user-1717934
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