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physical science 1

TermDefinition
Atom The basic partials from which all elements are made; 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 a gas to a liquid.
Evaporate The by which molecules at the surface of a liquid absorb enough energy to change to a gas.
Freeze The temperature at which a liquid freezes.
Gas A state of matter with no definite shape of volume.
Inert Having little or no ability to react.
Kinetic energy Energy that an object has due to its motion.
Liquid Long keywords a state of matter that has no definite shape but has a definite volume.
Matter Anything that has mass and takes up space.
Molecule A neutral group of two or more atoms held together by covalent bonds.
melt The temperature at which a substance changes from a solid to an liquid.
particle Smallest possible unit of matter.
particle motion Ways in which atoms, ions, or molecule move.
phase A physically distinctive form of matter, such as a solid, liquid, or gas.
phase change A change from one state to another without a change in chemical composition.
pressure A physical force exerted on an object.
pure substance A substance made of only one kind of matter and having definite properties.
Solid A start of matter that has no 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 particle of an object.
Vapor gaseous state of substance that is a liquid or a solid at room temperature.
Conduction The transfer of thermal energy of 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-1717831
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