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Unit 5 chapter 8

QuestionAnswer
Solid closely packed particles cause matter to have a definite shape and volume.
Crystalline solid particles form a regular repeating pattern called crystals
Amorphous solid particles not arranged in a repeating pattern.
Liquid particles are free to move so a liquid has a definite volume but no definite shape.
Surface Tension An inward force, or pull among the molecules in a liquid that brings the molecules on the surface closer together.
Viscosity A liquid’s resistance to flowing.
Gas particles can move and spread out filling all space available, thus gasses have no definite shape or a definite volume.
Pressure gas particles constantly collide with one another and the walls of their container.
Temperature the higher the temperature the faster particles move.
Melting When a solid changes to a liquid
Melting point the temperature at which a substance melts
Freezing When a liquid changes to a solid
Freezing point the temperature when a substance freezes.
Vaporization When a liquid changes to a gas
Evaporation takes place only on the surface of the liquid.
Boiling When vaporization occurs both below the and at the surface.
Boiling Point Temperature at which a liquid boils.
Condensation When a gas changes to a liquid.
Sublimation When a substance changes straight from a solid to a gas.
Charles’s Law When the temperature of a gas at a constant pressure is increased the volume is increased, if the temperature is decreased then the volume is decreased.
Directly proportional as one amount increases, another amount increases at the same rate.
Boyle's Law When the pressure of a gas at a constant temperature is increased the volume decreases, if the temperature is decreased then the volume increases.
Inversely proportional When the value of one variable increases, the other decreases.
Created by: user-1769863
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