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freezing
its when the substance goes from a liquid to a solid. Less energy, molecules slow down, low temperature, molecules compact, any object that is solid is in its frozen state
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melting
when an object goes from a solid to a liquid, heat is applied, molecules speed up and spread out, temp increases, more energy, shares freezing point
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boiling
liquid changes to a gas, heat is applied, molecules spread out and speed up, liquids change at different temps
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evaporation
liquids change from liquids to a gas, molecules speed up and spread out, temp and energy increases. the process where hot molecules leave cold molecules behind, steamy shower
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condensation
gases change from gas to liquid, molecures get smaller and clump, less energy, temp decreases, occurs in a drop of temperature, removal of heat. Rain cloud
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sublimation
when a solid turns directly into a gas. when heat energy is applied. temp increases, molecules increase and energy.
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plateau
phase change has occured, straight line on a graph
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phase changes
a physical change because no new substance is created, when a state of matter changes
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