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Chemistry
atoms and molecules
19
Biology
10th Grade
02/11/2009

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Term
atom
Definition
basic building block of matter
Term
protons
Definition
in the nucleus and had a + charge
Term
Electrons
Definition
in the electron cloud and has a - charge
Term
Neutrons
Definition
In the nucleus and has no charge
Term
molecules
Definition
when two elements are combined together
Term
atomic nucleus
Definition
where the portons and neutrons are located
Term
element
Definition
made up of neutrons
Term
atomic #
Definition
number of protons and electrons
Term
mass #
Definition
mass of the atom
Term
Daltons
Definition
weight unit of atom
Term
Compound
Definition
two or more elements combined in different porportions
Term
Mixture
Definition
combination of substamces that are phyiscally mixed but don't form a chemical bond
Term
Solution
Definition
any homogenous mixture
Term
Sulvent
Definition
liquid substance that makes up the bulk of the solution
Term
Solute
Definition
substance disolved in the sulvent
Term
Suspension
Definition
a mixture that seperates when left still
Term
collidial dispersion
Definition
occurs when the particles are too small to see
Term
homogeneous mixture
Definition
when the mixture is spread the same
Term
heterogeneous mixture
Definition
mixture is unevenly spread out
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