Datc
flas
Ghrl1ltr,rr
, Composition of Matter
Directions: Deternine whether
the ihlicized term makes each statement true or folse. lf the stotement
is true, write true in the blank. If the statement is false, write in the blonk the term or terms thot moke the
stntement true.
l. A material
made up of two or more substances that can be
easily separated by phnical methods is a composition.
2. A substance in which the atoms of trr*'o or more elements are
combined in a fixed proportion is called a combination.
3. A t1rye of matter
with frxed composition is called a substance.
4. A mi:rture where the particles are so small they cannot be
seen
with a microscope and will not settle to the bottom of
the mixture is called a suspension5. A mixture in which the separate components can be easily
distinguished is called a homogeneous mifiure.
Directions: Motch the
in the blank at the left.
terms in Qlumn
ll with the desoiptions in Column l. Write the lener of the conect term
ColtmnII
Column I
6. Particle size is in between a solution and a suspension
o. Tfndall effect
7. TWo atoms joined together to
b, compound
L
form one particle
Poisonous gas associated with salt
9. scattering of light
10"
I
l.
c. element
d. atoms
The result of combining two elements
€. rnolecule
There are approximately 100 such particles
f.
12. The category of matter gold, zinc, chlorine, sodiurn,
lead, americium, tungst€r, and titanium all belong to.
chlorine
g. colloid
(hsdfiGrtlon of ilaftcr 67
0ass
Date
Properties of Matter
Directions: Below are twl
sets
of words. Complete the second
set
Ghapter
m
r}
by choosing a word from those listed below
the blank. The two words must be related in the same wny 0s the first set of words.
EXAMPTE
letter: envelope:: pillow:
case, sheet, soft, bed
l. steam: water:: water:
heat, molecules, ice, matter
2. physicak chemical:: size:
burning, taste, solubility, acid
3.
chemical rust:: physical:
compound, condensation, element, change
,
t,/
size, melting, combustiHe, ice
coal, air, water, gasoline
ti
',-.,
vaporization, physicai property, iron, rnifiure
'a
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s
o
.g
burning logs, mountains, river deltas, ice water
C
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o.
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o
8. gold: gold leaf:: copper:
O
=
ice, wire, mass, chemical
Directions:
9.
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Answer the following questions on the linu provided.
What is the difference between
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a pfursical change and a chemical change?
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10. Name sorne physical properties.
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11. Explain how a pile of ashes has the same mass as the original log before
it was burned. What
is the law that defines this (assuming a completely dry log and no combustible products;
escaped in the air) called?
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68
Oasillotlon of ilatter
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Qass
Classification of Matter
0
Section
1
Composition of Matter
A.A
is either an element or a compound.
l. When all the atoms in a substance are alike, the substance is an
2.4
is a substance with two or more elements cornbined in a
fixed proportion.
B. Two or more substances that can be easily separated by physical means
form
t
a
1.A
rnixture is a mixture of different and easily distinguishable mate-
rials.
2.A
ta
mixture contains two or more gaseous, liquid, or solid
substances blended evenly and is also called a solution.
3.A'
is a heterogeneous mixture
with larger particles that never
settle. They scatter light in the Ty"dull effect.
v
4. A heterogeneous mixture containing a liquid in which visible particles settle is
called a
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Section
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2
Properties of Matter
A.A
is a characteristic of a material that can be observed without
changing the identity of the substances in the material. Examples include color, shape, size,
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melting point, and boiling point.
l.
physical description of a substance
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2.
3. Physical properties
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@
.g
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O
a substance acts;
for example, magnetism, viscosity, duailiry
such as size and magnetism can be used to
rnixtures.
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-how
B.A
is a change in a substance's size, shape, or state of matter.
I. A substance does not change
when
it undergoes a physical
change.
0
Classifiotion of
Matter
31
{-&
Name
Date
-
Class
is a process for separating a mixture by evaporating a
2.
liquid
(
and condensing its vapor.
C.A
property is a characteristic of
a substance
indicating that it can
change chemically, such as flammability or light sensitivity.
D. When one substance changes to another substance, a
l.
has occurred.
Some chemical changes are indicated by
change, smell, or
bubble formation.
2. Other chemical
changes occur very slowly, such as the formation
3. Chemical changes can be used to
of
substances such as metals
from their ores.
of Earth's surface involves both physical and chemical changes.
E.
changes include big rocks splitting
1,
into smaller ones and streams carryig
rock particles from one location to another.
changes can occur
2.
in rocks when calcium carbonate in limestone changes
to calcium hydrogen carbonate due to acid rain.
0
d
q
u;
F.
The law
of
says that the mass
of all
substances present before a chemical change equals the mass of all substances after the change.
.(1)
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12
i
Classification of Matter
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