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Classification of Matter

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Beth Shobe

on 26 September 2014

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Transcript of Classification of Matter


Pure Substances

Heterogeneous Suspension
made of atoms take up space (volume) and have mass
Diatomic Elements
Each molecule is an element because it is made of only 1 type of atom.
Pure substances.
made of more than 1 type of atom
more than 1 atom chemically bonded together
There are 92 types of atoms found naturally on earth. They combine to form all types of matter!

We know of 118 elements.
when atoms bond their properties change
Elements are atoms with different numbers of protons.

The atomic number is equal to the number of protons.
not evenly mixed
Evenly mixed. The SAME through out.
soluble-gets dissolved
liquid that does the dissolving
Higher temperatures make dissolving easier for solid and liquids, but harder for gasses
lower freezing point
raise boiling points
Counting Atoms
in a molecule

each element starts with a capital letter
# of molecules
applies to the WHOLE thing
think 4 (CaCO3)
# of atoms
applies only to the element before it
Ex. Salad can be EASILY pulled apart because they are physically combined. The parts remain the same & nothing new is created.
will not dissolve
what is the solute
in hot chocolate?
cocoa in cold milk
Cocoa in hot milk
what is the solvent in hot chocolate?
water is the universal solvent
solute + solvent = solution
lower freezing point
ex. the Hydrogen & Oxygen that make up water
Can't be separated without a reaction so they are chemically combined

Are made of 1 type of atom.
This means that every atom in the substance has the SAME number of PROTONS.
The smallest unit of matter

The parts are called subatomic particles: protons, neutrons, electrons

Overall they are neutral even though subatomic particles may have charges

They are not ANY state of matter.

The electrons do NOT orbit like planets.
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