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Physical-Chemical Pr
Term | Definition |
---|---|
matter | anything that has mass and volume (takes up space) |
mass | the amount of matter in an object |
volume | the amount of space an object occupies |
weight | the measure of gravity |
density | ratio of mass per unit volume d=m/v |
conductivity | the ability to transfer heat/electricity |
malleability | the ability to pound into thin sheets |
solubility | the ability of one substance to dissolve into another substance |
physical properties | characteristics that can be measured or observed |
physical change | a change in the form of a substance that DOES NOT change its identity |
solid | definite shape-definite volume- slow moving particles |
liquid | definite volume- takes shape of container- fast moving particles |
gas | volume and shape of container - extremely fast moving particles |
melting | changing from a solid to a liquid |
freezing | changing from a liquid to a solid |
evaporation | changing from a liquid to a gas |
condensation | changing from a gas to a liquid |
sublimation | changing from a solid to a gas |
chemical properties | characteristics that describe a substance's ability to change |
chemical change | a change in a substance when new substances are formed |
precipitate | a solid forming in a solution |
oxidation | gain of oxygen- rust |
endothermic | reactions that require heat (gets colder) |
exothermic | reactions that release heat (gets warmer) |