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chapter 8
Term | Definition |
---|---|
Crystalline solids | particles form a regular repeating pattern called crystals. |
Amorphous solids | particles not arranged in a repeating pattern |
Surface Tension | An inward force, or pull among the molecules in a liquid that brings the molecules on the surface closer together |
Viscosity | A liquids’s resistance to flowing |
Gas | particles are able to move and spread out filling all space available, thus gasses has no definite shape or definite volume |
Pressure | gas particles constantly collide with one another and the walls of their container. Pressure is the outward push divided by the area of the walls of the container. Pressure= Force/Area. |
Temperature | the higher the temperature the faster particles moving |
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. |