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Physical Science 1
Question | Answer |
---|---|
atom | the basic particle from witch all elements are made:the smallest particle of an element the has the proprieties of the element |
boil | the change in state from liquid to gas |
condense | the change of state from gas to liquid |
evaporate | the process by witch 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 the has no definite shape but has a definite volume |
matter | anything that has a mass and takes up space |
melt | the temperature that at which substance changes from 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 from 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 | the physical force of an object |
pure substances | a substance made of only one kind of matter and having definite properties |
solid | a state of matter that has a definite shape and volume |
system | a group of parts that work together as a whole |
tempature | a measure of the average energy in motion of the particles of a properties |
thermal energy | the total kinetic and potential energy of all the particles of a substance |
vapor | gaseous state of a substance that is a liquid or a solid at room temperature |
conduction | the transfer of thermal energy from on object to another |
convection | the transfer of thermal energy by the movement of fluid |
radiation | the transfer of thermal energy by electromagnetic waves |