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vocab section 2-4

science cards

QuestionAnswer
thermal energy the total energy of a substance's particles due to their movement or vibration
chemical energy a form of energy that comes from chemical bonds
law of conservation of energy the principle that the total amount of energy remains the same during physical or chemical change
melting the change in state from solid to liquid
freezing the change in state from liquid to solid
vaporization the change in state from liquid to gas
evaporation the process that occurs when vaporization takes place only on the surface of a liquid
boiling the process that occurs when vaporization takes place inside a liquid as well as on the surface
condensation the change of state from a gas to a liquid
sublimation the change in state from a solid directly to a gas without processing through the liquid state
chemical reaction a process in which substances undergo chemical changes, forming new substances with different properties
Created by: Yael
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