Term | Definition |
Gas | the state of matter in which a material has neither a definite shape nor a definite volume |
Heat of vaporization | amount of energy is the heat of vaporization for water |
pressure | the result of a force distributed over an area |
chemical change | occurs when a substance reacts and forms one or new substance |
flammability | a materials ability to burn in the presence of oxygen |
filtration | a process that separates materials based on the size of their particles |
Physical property | any characteristic of a material that can be observed or measured without changing the composition of the substance in the material |
melting point | the temperature at which a substance changes from a solid to a liquid |
condensation | the phase in which substances change from gas or vapor |
conductivity | a material's ability to allow heat to flow |
phase change | the reversible physical change that occurs when substance change from one state to another |
chemical property | an ability to produce a change in composition of matter |
pure substance | a simply substance matter that always has exactly the same composition |
homogeneous mixture | the substance are so evenly distributed that it is difficult to distinguish one substance in the mixture from another |
distillation | a process that separates the substance in the solution based on their boiling point |
physical change | when some of the properties of a material change but the substance in material remains the same |
viscosity | tendency of a liquid to keep from flowing it resistance to flowing |
evaporation | the process that changes the substance from liquid to a gas at temperature below substances boiling point |
liquid | the state of matter in which a material has a definite volume but not a definite shape |
vaporization | phase change in which liquid changes into gas |
precipitate | any solid that forms and separates for a liquid mixture |
sublimation | substance change form solid to a gas or vapor |
deposition | when a gas or vapor changes directly into a solid without changing into a liquid |
solid | the state of matter in which materials have definite shape and volume |