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Nature of Science & chemistry
definitions
36
Chemistry
Undergraduate 1
08/24/2011
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Term
Mass
 Definition
the quantity of matter in an object
Term
Weight
 Definition
the force of attraction between an object and other objects
Term
Property
 Definition
anything observed or measured about a sample of matter
Term
Extensive Property
 Definition
depends on size of sample
.mass
.volume
Term
Intensive Property
 Definition
independent of sample size
.density: color, Mp, reactivity
Term
Physical Properties
 Definition
can be measured with out changing composition of sample
.Mass (e), Density(i), color melting point
Term
Chemical property
 Definition
flammability, reactions, explosiveness, failure not to react with another chemical
Term
Physical Change
 Definition
freezing, evaporation
Term
Chemical Change
 Definition
.Rusting
.Burning
Term
Substance
 Definition
a material that is chemically the same throughout
Term
Element
 Definition
substance cannot be broken down into simpler substance by chemical means
Term
Compound
 Definition
can be broken down into simpler substances
Term
Mixture
 Definition
a combination of two or more substances that can be separated in the physical properties
.filtering
Term
Heterogenous Mixture
 Definition
Composition change from one part to another
ex. mixture of salt and pepper
Term
Acetate
 Definition
CH3CO2-
Term
Carbonate
 Definition
CO3-2
Term
Bicarbonate
 Definition
HCO3-
Term
Perchlorate
 Definition
CLO4-
Term
Chromate
 Definition
CrO4-2
Term
Cyanide
 Definition
CN-
Term
Dichromate
 Definition
Cr2O7-2
Term
Permanganate
 Definition
MnO4-
Term
Phosphate
 Definition
PO4-3
Term
Hydrogen Phosphate
 Definition
HPO4-2
Term
Dihydrogen phosphate
 Definition
H2PO4-
Term
1 mile
 Definition
1.609km
Term
1yd
 Definition
.9144m
Term
1ft
 Definition
.3048m
Term
1 inch
 Definition
2.54cm
Term
1 cubic ft
 Definition
.02832m3
Term
1gallon
 Definition
3.785 dm3
Term
quart
 Definition
.9464dm3
Term
1quart
 Definition
946.4cm3
Term
1floz
 Definition
29.35cm3
Term
1lb
 Definition
0.4536kg
Term
1oz
 Definition
28.35g
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