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Tolli/Stapp 1

Solids, Liquids, and Gases 6.6 A

TermDefinition
solid the state of matter that keeps its shape and will not yield to pressure
liquid the state of matter that has no fixed shape but has a fixed volume
gas the state of matter that has no fixed shape or volume; it can expand to fill a container
freezing point the temperature below which a liquid changes state to become a solid
melting point the temperature above which a solid changes state to become a liquid
boiling point the temperature above which a liquid boils (becomes a gas) at sea level
states of matter one of the distinct forms in which matter can exist
four the number of states of matter that are observable in everyday life
plasma the state of matter that is superheated, ionized gas (found in lightning and in stars like our sun)
changes of state the physical process that causes matter to change form from one state to another
melting the process of changing state from solid to liquid
freezing the process of changing state from liquid to solid
boiling, evaporation the process of changing from liquid to gas
vaporization the process of turning to vapor
boiling the process of the entire substance turning to vapor because of added heat energy
evaporation the process of the surface of the substance turning to vapor because of added heat energy
condensation the process of changing state from gas to liquid
sublimation the process of changing state from solid straight to gas, skipping the liquid phase
heating causes atoms and molecules to move more and expand
cooling causes atoms and molecules to move less and contract
Created by: foremanh
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