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23 Cards in this Set

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Solid
definite state and volume
Liquid
deifinite colume but indefinite shape, takes shape of its container
Gas
neither definite volume nor definite shape
Plasma
superheated gas

high-temperature physical state of matter in which atms lose most of teir electron, particles that make up atoms. (found in fluorescent light bulbs)
Melting
change from sold to liquid
Boiling
change from liquid to gas
Freezing
change from liquid to solid
Chemical Property
relates to a substance's ability to undergo changes hat transforms i into differet substances
Chemical change or reaction
a change in which one or more substances are converted into different substances
Reactants
substaces that react in a chemical change
Products
substances that are formed by the chemical cahnges.
Mixtures
a blend of two or more diferent kinds of matter. each with its own idenity and properties an can usually be separated.
Homogenous or solution
uniform in composition
Heterogenous
not uniform throughout
Physical poroperties- separation of mictures
magnestism, filtration, chromatography, centrifuge, vaporization, density
Pure Substances
have fixed composition and is different from a mixture. 1. Every sample has exactly the same characteristic properties
2. Every sample of a given pure substance has exactly the same compostion

Elements/Compounds
Impuriies
present in all lab chemicals
Endothermic
gets colder releases/loses heat
Exothermic
gets warmer absorobs heat
Evidence for a chemical change
1. color change
2. bublling/steaming - gas is involved
3. evolution of light
4. heat
5. formation of a precipitate (solid usually)
Endothermic
gets colder releases/loses heat
Exothermic
gets warmer absorobs heat
Evidence for a chemical change
1. color change
2. bublling/steaming - gas is involved
3. evolution of light
4. heat
5. formation of a precipitate (solid usually)