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Unit 3
States of Matter
Term | Definition |
---|---|
melting | change of state from a solid to a liquid with the addition of energy |
evaporation | the change of a substance from a liquid to a gas |
boiling | the conversion of a liquid to a vapor |
freezing | the change of state from a liquid to a solid |
condensation | the change of state from a gas to a liquid |
sublimation | the process in which a solid changes directly into a gas |
solid | the state of matter in which the volume and the shappe of a substance are fixed |
liquid | the state of matter that has a definite volume but not a definite shape |
gas | a form of matter that does not have a definite volume or shape |
plasma | a form of matter that consists of a super heated gas (99% of the univers) |
pressure | the amount of force exerted on the surface of an object |
viscosity | the resistance of a gas or liquid to flow |
physical property | can be observed or measured WITHOUT changing the substance |
chemical property | describes matter based on its ability to change into NEW matter with DIFFERENT properties |
signs of a chemical reaction | color change, heat, light, energy, gas, odor, can not reverse changes |