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Basic chemistry
biology
14
Chemistry
10th Grade
02/11/2009
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Term
Atom
 Definition
The basic building blocks of matter
Term
Protons
 Definition
positive charge
Term
Neutron
 Definition
neutral charge
Term
Electron
 Definition
negative charge
Term
Atomic Neucleus
 Definition
center of the atom and contains protons and neutrons
Term
Elctron Cloud
 Definition
contains electrons
Term
Element
 Definition
Substance made entirely of the same atom
Term
Atomic number
 Definition
number of protons in a nucleus
Term
Mass number
 Definition
an atom weight
Term
Colloidal dispersion
 Definition
a type of suspension where the particles are too small to settle out
Term
Mixture
 Definition
physical or chemical change
Term
Compound
 Definition
A chemical change occurs
Term
Molecule
 Definition
two or more elements combine
Term
Dalton
 Definition
unit of measure for atoms
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