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Phase Change Vocab

TermDefinition
freezing point The temperature at which a substance freezes.
atom the smallest unit of an element that has the properties of that element.
boil the change of a liquid to a vapor.This happens when the vapor pressure equals the atmospheric pressure.
Boiling point the temperature at which a material changes from a liquid to a gas.
Condensation the change of state from a gas to a liquid
energy movement of atoms, molecules, compounds, or matter. Energy comes in many forms including heat, kinetic, potential, mechanical or electrical.
evaporation the change of state from a liquid to a gas only at the surface.
freedom of movement the way molecules in a substance move around each other, or away from each other
freeze the change of state in which a liquid becomes a solid by taking away heat.
gas a form of matter that does not have a definite volume or shape
kinetic energy the energy that an object has because it is moving
liquid the state of matter that has a definite volume but not a definite shape.
Melt the change of state in which a solid becomes a liquid by adding heat
Melting point The temperature at which a substance melts.
molecular attraction a pull between two molecules
molecule the smallest particle of a substance that still has the properties of that substance
particle a very small piece or amount of matter.
phase a noticeably different form or state of the same substance
plasma a state of matter that starts as a gas and then becomes ionized, meaning that it has free-moving ions and electrons and takes on an electric charge.
Solid the state of matter in which the volume and shape of a substance are fixed.
States of matter The physical forms of matter, which include solid, liquid, and gas.
temperature a measure of how hot or cold something is. The higher the temperature is, the more energy it has.
Sublimation A change directly from the solid to the gaseous state without becoming liquid
Created by: ferguslr
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