What’s the MATTER
Classify Matter
Matter,
Classify Matter
At the conclusion of our time
together, you should be able to:
1. Classify a mixture of matter based on
their physical and chemical properties
2. Characterize various types of matter
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Types of Matter
 Pure Substance Matter with a fixed composition
 It has distinct properties
 Examples =
elements
compounds
Types of Matter
 Mixtures Most matter is a mixture
 The composition is not fixed (changes
from sample to sample)
 Two Types –
Homogeneous
Heterogeneous
2
Homogeneous Mixtures
 Composition is uniform throughout
 Solution Particle size = 0.01 – 1 nm
 Doesn’t settle out upon standing
 Can’t be separated by filtering
 Doesn’t scatter light
 Example = salt water
Heterogeneous Mixtures
 Suspension
 The sample varies in composition, properties
and appearance
 No uniformity





Particle size is greater than 1000 nm
Particles settle out upon standing
Can be separated by filtration
Might scatter light
Examples = soil, trail mix, pond water
3
Hetereogeneous Mixtures
 Colloid Particle size = 1 – 1000 nm
 Doesn’t settle out upon standing
 Can’t be separated by filtering
 Scatters light (Tyndall Effect)
 Examples = milk, gelatin, smoke
Let’s Look at Some Examples:
 Mixtures are variable combinations of 2
or more pure substances.
Heterogeneous –
visibly separate phases
Homogeneous –
Same throughout
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Air is a mixture of several gases.
Name
Formula
amount
Nitrogen
N2
78 %
Oxygen
O2
21 %
Argon
Ar
1%
Carbon
CO2
0.03 %
Dioxide
Air is a mixture of several gases
Name
Formula
Amount
Neon
Ne
0.002 %
Methane
CH4
0.0002 %
Helium
He
0.000524 %
Krypton
Kr
0.000114 %
Hydrogen
H2
0.00005 %
Xenon
Xe
0.0000087 %
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What’s the MATTER
Classify Matter
Let’s Put it All Together in
a Chart!!
Yes
MATTER
No
Can it be physically
separated?
MIXTURE
PURE SUBSTANCE
Yes
No
Can it be chemically
Is the composition
uniform?
decomposed?
Yes
HomoNo
Heterogeneous
geneous
Mixture
Compound
Element
Mixture
(solution)
Colloids
Suspensions
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Matter,
Classify Matter
Let’s see if you can:
1. Classify a mixture of matter based on
their physical and chemical properties
2. Characterize various types of matter
Putting sand and salt together
makes
a compound.
an element.
a mixture.
a solution.
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Pure Water is
a compound.
an element.
a solution.
a mixture.
Tap Water is
a compound.
an element.
a solution.
a mixture.
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An atom is to an element, as a
molecule is to a
metal.
nonmetal.
metalloid.
compound.
If different kinds of atoms are
represented by different colored
dots, which picture represents a
sample of a compound?
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If different kinds of atoms are
represented by different
colored dots, which picture
below represents a mixture?
Which of the following illustrations
represents a pure substance?
10
Salt (NaCl) is a common
substance. Salt is which of these?
atom
element
compound
mixture
A chocolate chip cookie is an
example of a __________,
because ______________.
a. compound, the ingredients are chemically
bonded.
b. compound, it is the same throughout.
c. mixture, you can separate out the chips.
d. mixture, you cannot distinguish between
the ingredients.
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Which formulas represent
compounds?
O2, H 2O2
CO2, H2O
H2, CO2
H2, O 2
Which of the following is a
compound?
• oxygen
• water
• nitrogen
• air
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