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spartascience

Glencoe Ch.4 States of Matter (gd7)

QuestionAnswer
atom smallest piece of an element
molecule 2 or more atoms chemically combined
The 3 "States of Matter" solid, liquid, gas
temperature the average speed of the molecules
matter anything that takes up space and has mass
heat energy going from matter at a higher temp. to a lower temp.
freezing point the temp. at which a substance changes from a liquid to a solid
viscosity a material's resistance to flow
boiling point temp. at which water changes from a liquid to a gas
condensation when a gas cools and turns into liquid
diffusion when molecules go to where there's less of them
formula for Pressure Force divided by Area
boiling point of water at sea level 100 degrees Celsius
formula for Density Mass divided by Volume
Archimedes' principle when an object is placed in a fluid, the object weighs less by the weight of the displaced fluid
freezing point of water at sea level 0 degrees Celsius
3 ways heat travels conduction, convection, radiation
conduction when heat energy travels through a solid
convection when heat energy travels through air
radiation transfer of energy as EM waves, such as visible light and infrared waves
Created by: henriksen
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