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Term | Definition |
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Atom | the basic particle from which all elements are made; the smallest particle of an element 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 |
evaportate | the process by which molecules at the surface of a liquid absorb enough energy 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 it has a definite volume |
matter | anything that has mass and takes up space |
melt | the temperature at which a substances changes from a solid to liquid |
molecule | a neutral group of two or more atoms held together by covalent bonds. |
partice | smallest possible unit of matter |
particle motion | ways in which atoms, ions, or molecules move |
phase | a physically distinctive form of matter, such as as solid , liquid, or gass |
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 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 substances |
thermals energy | the total kinetic and potential energy of all the particles of an substance |
vapor | gaseous state of a substance that is liquid of 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 of fluid |
radiation | the transfer of energy by electromagnetic waves |