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Chemistry Classification of Matter
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Matter created ex nihilo
From nothing
How can we know where matter comes?
Faith
Physical properties can be measured without changing the substance
Chemical Properties
Substance changed into something else
physical change also occurs
Ex. of Physical properties
Ductility
maleability
conductivity
density
Ducitilty
How easily it can be drawn in thin wires
Maleability
Describes how matter can be hammered into shapes
If it doesn't change chemical formula than it is physical property
Ex. of Chemical Properties
Flammable, reactive, oxidizes
Mixtures
Two or more pure substances physically placed together, not chemically joined
Pure Substance
one kind of particle
heterogeneous
type of mixture
different kinds of particles are visible
sand and rocks
Homogeneous
type of mixture
different particles are not visible
salt water
Solution
same as homogeneous mixture
Solution vs. pure substance
A pure substance has fixed composition.
A mixture has a variable composition
element
(pure substance)
cannot be broken down by ordinary chemical means
Atom
smallest part of an atom
element 3 category
Monatomic
diatomic
polyatomic
compounds
molecules from two or more elements that have been chemically bonded together
Subscript
A number that indicates the amount of atoms or groups of atoms in a formula
Coefficient
A number in front of a formula which tells how many molecules or atoms are present.
Molecule
two or more atoms that are chemically bonded together
oil and vinegar
Heterogeneous mixture
iron
element
Air
Homogeneous Mixture
Potassium Chloride
Compound
Seawater
Homogeneous Mixture
Glucose
compound
water compound
Soil
Heterogeneous
Author
JJ73
ID
234427
Card Set
Chemistry Classification of Matter
Description
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Updated
9/12/2013, 6:30:10 AM
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