WorksheetsChemistry Exam Review #2
Total questions: 25
Worksheet time: 37mins
Name
Class
Date
1.
The first figure in a properly written chemical symbol is always...
a)
boldfaced
b)
capitalized
c)
underlined
d)
italicized
2.
What is it called when matter changes from a gas directly to a solid?
a)
deposition
b)
condensation
c)
sublimation
d)
freezation
3.
How many significant figures are in the measurement 0.0034 kg?
a)
two
b)
four
c)
five
d)
three
4.
Three electrons are available to fill three 2p orbitals. How will these electrons be distributed?
a)
Three electrons fill three 2p orbitals.
b)
Three in one orbital, none in the others.
c)
Two electrons in one orbital, one in another, none in the third.
d)
One electron in each orbital.
5.
If an element is a poor conductor of electricity, in which category does it belong?
a)
metals
b)
nonmetals
c)
metalloids
d)
transition elements
6.
Density is found by....
a)
dividing volume by mass
b)
multiplying mass and volume
c)
dividing mass by volume
d)
multiplying mass by moles
7.
The smallest particle of an element that retains that element's properties is...
a)
atom
b)
electron
c)
compound
d)
molecule
8.
In which of the following are correct?
a)
Cs: 55 protons, 133 electrons
b)
Zn: 30 protons, 60 electrons
c)
In: 49 protons, 49 electrons
d)
F: 26 protons, 26 electrons
9.
How many electrons does magnesium have to give up to obtain a noble gas electron configuration?
a)
1
b)
2
c)
3
d)
12
10.
What is the formula for aluminum oxide?
a)
AlO
b)
Al3O6
c)
Al2O3
d)
Al3O2
11.
Which of the following compounds contains the lead(II) ion?
a)
PbO
b)
PbCl4
c)
Pb2O
d)
Pb2S
12.
When combined with fluorine, which of the following would most likely form an ionic compound?
a)
carbon
b)
phosphorus
c)
neon
d)
lithium
13.
What is the correct name of the compound SF6?
a)
sulfur fluoride
b)
hexasulfur monofluoride
c)
sulfur hexafluoride
d)
monosulfur hexafluoride
14.
Which of the following IS NOT a diatomic element?
a)
fluorine
b)
carbon
c)
nitrogen
d)
bromine
15.
What are the coefficients that will balance this equation:
N2 + H2 --> NH3
N2 + H2 --> NH3
a)
1, 1, 1
b)
1, 3, 2
c)
1, 3, 3
d)
3, 1, 2
16.
When the equation
Fe + Cl2 --> FeCl3
is balanced, what is the coefficient for Cl2?
Fe + Cl2 --> FeCl3
is balanced, what is the coefficient for Cl2?
a)
1
b)
2
c)
3
d)
4
17.
One mole of ANYTHING is...
a)
12
b)
22.4
c)
6.02 x 1032
d)
6.02 x 1023
18.
The mass of one mole of a substance is...
a)
molar mass
b)
atomic mass
c)
molecular mass
d)
avogadro mass
19.
How many moles are in 245 g of NaCl?
a)
245
b)
4.2
c)
4.06 x 1023
d)
0.23
20.
How many atoms are in 3.5 moles of arsenic atoms?
a)
5.8 x 10-24
b)
7.5 x 101
c)
2.1 x 1024
d)
1.7 x 1023
21.
You have 1 mole of the following gases at STP. Which one has the greatest volume?
a)
neon
b)
helium
c)
xenon
d)
they all have same volume
22.
In the reaction
2H2 + O2 --> 2H2O
which of the following is a product?
2H2 + O2 --> 2H2O
which of the following is a product?
a)
O2
b)
H2
c)
H2O
d)
OH
23.
If a balloon is squeezed, what happens to the temperature of the air inside the balloon?
a)
it goes up
b)
it goes down
c)
it does not change
d)
it doubles
24.
A gas occupies a volume of 2 L at 0.75 atm. What is the the volume of the gas at 1.2 atm?
a)
1.80 L
b)
1.25 L
c)
2.22 L
d)
3.2 L
25.
A gas with an unknown volume has a temperature of 300K and 2 atm. If the gas has a volume of 4.0 L at STP, what was its original volume?
a)
4.40 L
b)
8.8 L
c)
1.82 L
d)
2.20 L
100 %
