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GEN CHEM I
final for GEN CHEM I
72
Chemistry
Undergraduate 1
12/14/2007
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Term

physical change

Definition
A change that alters only the state or appearance of a substance but not its chemical composition
Term
chemical change
 Definition
A change that alters the molecular composition of a substance.
Term
matter
 Definition
Anything that occupies space and has mass
Term
solution
 Definition
A homogenous mixture of two subtances
Term
intensive property
 Definition
a property such as density that is independent of the amount of a given substance
Term
extensive property
 Definition
a property that depends on the amount of a given substance, such as mass.
Term
density
 Definition
the ratio of an objects mass to its volume
Term
mass
 Definition
a measure of the quantity of matter making up an object.
Term
volume
 Definition
a measure of space. any unit of length, when cubed becomes a unit of volume
Term
precision
 Definition
a term that refers to how lose a series of measurements are to one another or how reproducible they are.
Term
accuracy
 Definition
a term that refers to how close a measured value is to the actual value.
Term
element
 Definition
Term
pure substance
 Definition
Term
molecule
 Definition
Term
compound
 Definition
Term
mixture
 Definition
Term
homogenous mixture
 Definition
Term
heterogenous mixture
 Definition
Term
electron
 Definition
Term
proton
 Definition
Term
neutron
 Definition
Term
nucleus
 Definition
Term
isotope
 Definition
Term
mass number
 Definition
Term

atomic number

 

 Definition
Term
atom
 Definition
Term
natural abundance
 Definition
Term
atomic mass
 Definition
Term
anode
 Definition
Term
cathode
 Definition
Term
period
 Definition
Term
group or family
 Definition
Term
alkali metal
 Definition
Term
alkaline earth metal
 Definition
Term

halogens

 Definition
Term
noble gases
 Definition
Term
main group element
 Definition
Term
transition elements
 Definition
Term
metal
 Definition
Term
nonmetal
 Definition
Term
metalloid
 Definition
Term
law of mass conservation
 Definition
Term
law of definite proportion
 Definition
Term
fraction by mass
 Definition
Term
percent by mass
 Definition
Term
law of multiple proportions
 Definition
Term
ionic compounds
 Definition
Term
cation
 Definition
Term
anion
 Definition
Term
halide ion
 Definition
Term
oxanions
 Definition
Term
molecular (covalent) compounds
 Definition
Term
formula unit
 Definition
Term
empirical formula
 Definition
Term
molecular formula
 Definition
Term
molar mass
 Definition
Term
percent composition
 Definition
Term
monatomic ion
 Definition
Term
polyatomic ion
 Definition
Term
reactant
 Definition
Term
product
 Definition
Term
chemical equation
 Definition
Term
law of conservation of matter
 Definition
Term
stoichiometry
 Definition
Term
stoichiometric coefficient
 Definition
Term
percent yield
 Definition
Term
theoretical yield
 Definition
Term
balanced equation
 Definition
Term
balanced equation
 Definition
Term
limiting reagent
 Definition
Term
reactant in excess
 Definition
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