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Chemistry Final Review (part 1) Flashcards | StudBud
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Chemistry Final Review (part 1)
Chemistry Final Review (part 1)
25 terms
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StudBud Administration
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covers chapters 1-3 of Prentice Hall Chemistry
Flashcards
25 cards
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Practice quiz
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Questions
25
Answers
1
How do you
separate a compound
into its component elements?
chemically
mechanically
by physical methods
2
If you
decrease the temperature
of most matter, what happens to its
volume
?
increases
stays the same
volume will double
decreases
3
Which of the following is FALSE about a
homogeneous mixture?
is a solution
has uniform composition
must be a liquid
can be a gas
4
Which of the following indicates a
chemical change
has occurred?
all of the above
change in color
production of gas
transfer of energy
5
Which of the following is a
chemical change
?
fermenting cheese
mixing two different cheeses in a bowl
melting cheese
grating cheese
6
What are the steps in the
scientific method?
make observations, test hypotheses, develop theories
test hypotheses, make observations, develop theories
develop theories, test hypotheses, make observations
test hypotheses, develop theories, make observations
7
Which are true about a
chemical change
?
produces matter w/same composition as original matter.
produces matter w/different composition as original matter.
usually reversible chemical reaction producing new material
8
Which of the following techniques can be used to
separate a mixture?
filtration
chromatography
distillation
all of the above
9
Which of the following is true about a
heterogeneous mixture
?
its composition is not uniform
it must be a lquid
it must be a gas
it is a solution
10
If you
decrease the temperature
of most matter, what happens to its
density?
decreases
increases
density will double
stays the same
11
What are the steps for
effective problem solving
in chemistry?
procrastinate and then guess
trial and error approach
evaluate, calculate and analyze
analyze, calculate and evaluate
12
Which is the correct
chemical equation
for the production of water?
2H + 2O ---> H2O
2H2 + O2 ---> 2H2O
H2 + O2 ---> 2H2O
H + O ---> H2O
13
Which of the following is a
physical change
?
corrosion
explosion
rotting of food
evaporation
14
The
law of conservation of mass
states that in any physical change or chemical reaction mass is
decreased
increased
conserved
changed
15
A substance that can be
separated
into two or more substances only
by a chemical change
compound
mixture
solution
element
16
Which of the following is NOT a
homogeneous mixture
?
chicken noodle soup
air
stainless steel
chocolate milk
17
Which are true about a
physical change
?
matter produced has a different composition than original.
properties of the material change, but composition does not.
composition of the material changes, but properties do not.
18
Identify the
reactants
H2
O2
H2O
H2 and O2
19
Substance formed when two or more elements are
chemically
combined
heterogeneous mixture
alloy
compound
homogeneous mixture
20
How do you
separate mixtures?
use processes based on differences in physical properties
use processes based on differences in chemical properties
21
How do we represent
elements
today?
drawings
icons
letters
numbers
22
Which is the correct
chemical equation for the decomposition of water
into hydrogen and oxygen?
H2O ---> H + O
H2O ---> 2H + 2O
2H2O ---> H2 + O2
2H2O ---> 2H2 + O2
23
How do we represent
compounds
today?
chemical equations
chemical reactions
chemical formulas
chemical symbols
24
A
chemical change
occurs when a piece of wood
is nailed
is split
is cut
decays
25
Which of the following is a
heterogeneous mixture
?
surgical steel
air
fruit salad
strawberry milk
