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Classifying MatterA Day: 9/3/13
B Day: 9/4/13
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Matter
Anything that has mass and takes up space
Anything made from atoms
Examples:
Molecules
CellsPeople
Air
Water
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Classifying Mixtures Flow Chart
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Elements Elements are pure substance that cannot be
separated into simpler substance byphysical or chemical means.
Pure substance
Every atom is the same
Elements can be found on the periodic table!
Element
Single Atom
Cannot be separated by
chemical or physical
processes
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Compounds Pure substance composed of two or more
d ifferent elementsjoined by chemical bonds.
Made ofelements in a specific ratio
Has a chemical formula
Can only be separated by
chemical means only, not physically
Compound
Single Molecule
Made of more than one type of
atom bonded together
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Mixtures
Combining two or more pure substances
Substances held together by physicalforces, notchemical
No chemical change takes place .
They can be separated physically.
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Homogeneous Mixtures
Homogeneous mixtures are also known as solutions.
Visually the solution looks uniform throughout.
The different particles cannotbe seen.
This solution remains constant and does notseparate out.
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Heterogeneous Mixtures
TWO TYPES:
Colloids Particles may be big enough to see
under a microscope but will stay suspended overtime.
Suspensions Have the largest of all dispersedparticles. They are visible to the eye and will settle
out over time.
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Mixtures vs. CompoundsMIXTURE COMPOUND
COMPOSITION You can vary the amount
of each substance in a
mixture
Cannot change the
amount of each element
in a compound
CHEMICALLY
JOINED?
Not chemically joined Chemically joined
PROPERTIES Each substance involved
keeps its own properties
Compound has
properties different from
each element
SEPARATION Easily separated Separated only using
chemical reactions
EXAMPLES Sea water, kool-aid Water
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Check For Understanding
What are the two types of pure
substances?
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Answer
Elements
Compounds
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Pure Substance orMixture?
ROCKS
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Answer
MIXTURE
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Pure Substance orMixture?
Copper
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Answer
Pure Substance
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Pure substance ormixture?
Jelly Beans
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Answer
Mixture
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Pure substance ormixture?
Table Sugar
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Answer
Pure Substance
(Compound)
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Pure substance ormixture?
Salt
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Answer
Pure Substance
(Compound NaCl)
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Pure substance ormixture?
Tea
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Answer
Mixture
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Pure Substance ormixture?
Water
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Pure Substance orMixture?
Aluminum
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Answer
Pure Substance
(Element)
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Answer
Mixture
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Guided Practice
A B C D E
Element Compound
Mixture of elements
Mixture of compound
Mixture of elements and compound