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Chem 9 Final Review
Chem 9 Final Review
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Freshman #Chemistry Final Exam Review
Flashcards
36 cards
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Practice quiz
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Questions
36
Answers
1
This scientist was a philosopher, and the first to say matter is made of indivisible particles.
Ernest Rutherford
J.J. Thomson
John Dalton
Democritus
2
What is a scientific theory?
A well-tested explanation for observations and results.
An explanation that is can be proven true 100% of the time.
something from The Big Bang Theory.
A guess of why things are the way they are.
3
Which substance has the higher
viscosity?
gasoline
water
Mountain Dew
syrup
4
Which of the following is a physical change?
Breaking a window
Leaves changing color
Burning cardboard
Rust on a car
5
Select the correct definition of
kinetic energy
.
The energy an object has from the Sun.
The energy an object has due to its mass.
The energy an object has due to its motion.
The energy an object has due to its shape.
6
Isotopes of the same element have different atomic numbers.
FALSE
TRUE
7
A substance that can be hammered or bent without shattering is said to have high...
conductivity
viscosity
malleability
bendability
8
This scientist said electrons were found in different energy levels orbiting the nucleus.
Mr. Rauch
Neils Bohr
John Dalton
J.J. Thomson
9
Which type of reaction is: Mg + 2HCl --> H
2
+ 2MgCl
2
?
decomposition
single replacement
double replacement
synthesis
10
This Russian chemist and teacher discovered a way to classify and organize the elements.
Neils Bohr
Dmitri Mendeleev
Charles Boyle
Kristaps Porzingis
11
What is the atomic number of krypton?
24
48
36
84
12
What type of reaction is the following: 3KOH + H
3
PO
4
--> K
3
PO
4
+ 3H
2
O
synthesis
combustion
double replacement
single replacement
13
These images are examples of a...
chemical bonding diagram
electron dot diagram
Bohr model
covalent bonding model
14
Choose which of the following is a
homogeneous
mixture.
Rocky Road ice cream
Campbell's vegetable soup
Beach sand
Kool-Aid
15
This scientist said an atom had negatively charged particles in a positively charged mass.
Albert Einstein
J.J. Thomson
Neils Bohr
John Dalton
16
Which of the following is NOT a characteristic of the noble gases?
odorless
highly reactive
colorless
extremely unreactive
17
Elements that are located in the same column have...
similar mass numbers
similar properties
similar color
the same number of protons
18
What is the correct name for the following compound: Cu(NO
3
)
2
chromium sulfate
copper(II) nitrate
copper(I) nitrite
cobalt nitrate
19
A gas changing to a liquid is referred to as...
evaporation
condensation
freezing
deposition
20
Which of the following subatomic particles are NOT found in the nucleus?
electron
neutron
proton
21
The law of conservation of mass states that in a chemical reaction…
mass is neither created nor destroyed.
mass is created, but not destroyed.
mass is created and destroyed.
mass is not created, but sometimes destroyed.
22
What are the correct coefficients needed to balance the following equation? Li + O
2
--> Li
2
O
(4, 1, 2)
(2, 1, 4)
(2, 1, 2)
(2, 3, 2)
23
What is the general formula of a synthesis reaction?
A + B --> AB
AB --> A + B
A + BC --> C + AB
AB + CD --> AD + BC
24
Which of the following is an element?
Salt
Bronze
Steel
Magnesium
25
List the reactants in the following equation: 2Na + Cl
2
--> 2NaCl
Na
Na, Cl2, NaCl
Na, Cl2
NaCl
26
An
endothermic
reaction...
only happens in space
absorbs energy
releases energy
does not absorb or release energy
27
Choose the balanced equation.
NaNO3 --> NaNO2 + O2
3KOH + H2SO4 --> K2SO4 + 2H2O
Na + 2Cl2 --> NaCl
2Na + 2H2O --> 2NaOH + H2
28
Choose the correct formula for the compound
tricarbon pentafluoride
.
C3O5
C4O5
C3F5
CF3
29
Chemistry is defined as the study of...
composition, structure, properties, and reactions of matter
all living things
how matter and energy interact through forces
the origin, history, and structure of Earth
30
Which is NOT a common indicator of a chemical change?
change in color
change in shape
production of a gas
formation of a precipitate
31
Which side of the periodic table are the nonmetals found on?
right
middle
bottom
left
32
The period number indicates the...
available number of orbitals for those elements
number of protons for those elements
number of electrons for those elements
similar properties of those elements
33
TEST QUESTION:
Choose your current grade level.
Freshman (9)
Senior (12)
Junior (11)
Sophomore (10)
34
Which state of matter has
definite volume
, but not a
definite shape?
gas
air
solid
liquid
35
A substance changing directly from a solid to a gas is referred to as...
melting
sublimation
deposition
evaporation
36
What coefficients balance this equation: P + O
2
--> P
4
O
10
(2, 4, 2)
(4, 2, 1)
(5, 3, 1)
(4, 5, 1)
