Chemistry: Matter and Change

Chapter 3: Matter - Properties and Changes

Standardized Test Practice

1
Matter that has a uniform and unchanging composition is a ___________.
A)substance
B)solid
C)vapor
D)mixture
2
Which of the following is not a chemical change?
A)freezing of water
B)rusting of iron
C)placing iron in hydrochloric acid and producing hydrogen gas
D)burning a piece of wood
3
A vapor is a _________.
A)gas
B)solid
C)liquid
D)condensed state
4
Properties that are dependent on the amount of substance present are ________.
A)intensive properties
B)extensive properties
C)chemical properties
D)external properties
5
The statement, "Mass can neither be created nor destroyed" is the ____________.
A)law of conservation of mass
B)law of conservation of energy
C)law of multiple proportions
D)law of gravity
6
Which of the following is not a physical change?
A)iron melting
B)rotting food
C)breaking a crystal
D)cutting paper into small pieces
7
In the chemical change above, what is the mass of the product if the reactants have mass of 44.6 grams (Fe) and 12.8 grams (O2)?
A)57.4 grams
B)31.8 grams
C)571 grams
D)3.48 grams
8
Which of the following is a heterogeneous mixture?
A)sugar
B)sugar in water
C)samples of nitrogen and oxygen gases in the same container
D)samples of gaseous argon and solid iron in the same container
9
A technique that uses a porous barrier to separate heterogeneous mixtures is _______.
A)distillation
B)chromatography
C)filtration
D)crystallization
10
Distillation separates mixtures by their ____________.

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A)molecular weights
B)boiling points
C)densities
D)freezing points
11
Sublimation is a process in which a _____ changes to a _____ without melting.
A)solid : liquid
B)liquid : gas
C)solid : gas
D)gas : liquid
12
A material that cannot be broken down further by chemical means is a(n) ________.
A)substance
B)element
C)mixture
D)compound
13
Fe2O3 is a(n) _____________.
A)compound
B)element
C)heterogeneous mixture
D)homogeneous mixture
14
As water or hydrogen peroxide break down to hydrogen and oxygen, they change from ________ to ________.

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A)homogeneous mixtures: heterogeneous mixtures
B)elements : compounds
C)compounds : elements
D)heterogeneous mixtures : compounds
15
Sucrose is composed of carbon, hydrogen, and oxygen. Which of the following data is not needed in order to determine the percent by mass of the three elements?

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A)mass of carbon in sucrose sample
B)mass of hydrogen in sucrose sample
C)total mass of the sucrose sample
D)atomic numbers of the elements
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