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Physical Science 1

TermDefinition
Atom the basic particle from which all elements are mad; the smallest particle of an element that has the properties of that element.
boil the change in state from a liquid to a gas
condense the change in state from gas to a liquid.
evaporate the process by which molecules at the surface of a liquid absorb enough.
freeze the temperature at which a liquid freezes.
gas a state of matter with no definite 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 that has mass and takes up.
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 solid, liquid, gas.
phase change a change from one state to another without a change in chemical composition.
pressure the physical force exerted on a object.
pure substance a substance made of only 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.
temp a measure of the average energy of motion of the particles of a substance.
thermal energy the total kinetic and potential energy of all particles of an object.
vapor gaseous state of a substance that is a liquid or a solid at the room temp.
conduction the transfer of thermal energy from one object to another.
convection the transfer of thermal energy by the movement of a fluid.
radiation the transfer of energy by electromagnetic waves.
Created by: user-1717823
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