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physical science 1

QuestionAnswer
Atom the basic particle from which all elements are made; the smallest particles 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 process 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 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 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
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 the particles of an object
vapor gaseous state of a substance that is a liquid or a solid at room temperature
conduction the transfer of thermal energy
Created by: user-1718146
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