WorksheetsCP/GHP Midterm Review
Total questions: 78
Worksheet time: 1hrs 7mins
Name
Class
Date
1.
A block has a mass of 54.0 g and a volume of 20.0 cm3. What is the density of the block?
a)
74.0 g/cm3
b)
1080 g/cm3
c)
34.0 g/cm3
d)
2.70 g/cm3
2.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
3.
Which of the following is correct scientific notation?
a)
20.35 x 104
b)
.2035 x 104
c)
2035 4
d)
2.035 x104
4.
How many sig. fig. are in the number below:
705000
705000
a)
2
b)
3
c)
5
d)
6
5.
19.545 / 7.2
a)
2.7146
b)
2.7
c)
3
6.
Which is a chemical property
a)
Reactivity
b)
Solid
c)
Color
d)
Shape
7.
Water boiling is a _______ change.
a)
Physical Change
b)
Chemical Change
8.
Which one of these pictures represents a mixture?
a)
1
b)
2
c)
3
d)
1, 2 and 3
9.
There are two reactants in a chemical equation, and one product. The mass of the product is 30g. The mass of the first reactant is 17g. What must the mass of the second reactant be, if the equation is to follow the law of conservation of mass?
a)
47g
b)
13g
c)
23g
d)
You cant tell with the given information
10.
The subatomic particle that determines the identity of an element.
a)
neutron
b)
proton
c)
electron
d)
outer shell
11.
An element with a mass number of 11 and an atomic number of 5 has how many neutrons?
a)
11
b)
5
c)
6
d)
16
12.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
13.
What do these isotopes of carbon all have in common?
a)
neutrons & mass number
b)
atomic number and neutrons
c)
atomic number and electrons
d)
protons, atomic number, and mass number
14.
How is carbon-12 different from carbon-14?
a)
They have a different number of protons
b)
they have a different number of electrons
c)
they have a different number of neutrons
d)
they are different elements
15.
Each column in the periodic table is called a
a)
period
b)
group
c)
cluster
d)
unit
16.
The atoms along the staircase are called
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
17.
Which is a halogen?
a)
Helium
b)
Chlorine
c)
Oxygen
d)
Neptune
18.
An atom that has gained or lost electrons is called ...
a)
a winner
b)
an isotope
c)
an ion
d)
a loser
19.
Atoms that lose electrons become...
a)
negatively charged
b)
postively charged
c)
remain neutral, no charge
d)
losers
20.
Na2S
a)
Sodium Sulfide
b)
Sodium Sulfate
c)
Sodium Sulfite
d)
Disodium Sulfide
21.
Fe2S3
a)
Iron(III) Sulfide
b)
Iron(III) Sulfate
c)
Iron(II) Sulfide
d)
Iron(II) Sulfate
22.
What is the proper name for S2O2?
a)
Sulfur oxide
b)
Sulfur dioxide
c)
sulfur (II) oxide
d)
disulfur dioxide
23.
What type of chemical reaction is this one?
Al(OH)3 --> Al2O3 + H2O
Al(OH)3 --> Al2O3 + H2O
a)
Decomposition
b)
Combustion
c)
Synthesis
d)
Single Replacement
24.
Evidence of a chemical reaction include:
a)
Phase change
b)
No new substance
c)
Bubbles forming
d)
Shape change
25.
Which of the following could indicate a chemical change?
a)
All of the answers could indicate Chemical Change
b)
a color change has occurred
c)
bubbles appear
d)
identifying one or more new chemical products
26.
Which of the following is NOT an example of a chemical reaction?
a)
Wood Burning
b)
A cake baking in an oven
c)
Melting Ice Cream
d)
Mixing Vinegar and Baking Soda
27.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
28.
an atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
29.
What does the 1.00794 stand for?
a)
Hydrogen
b)
atomic number
c)
atomic mass
d)
atomic explosion
30.
If the number of protons equal the number of _____, the atom will have no charge
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
31.
Ions are:
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
32.
A compound consists of two or more elements bound together.
a)
True
b)
False
33.
Element or Compound?
H2SO4
H2SO4
a)
Element
b)
Compound
34.
Who discovered the electron?
a)
J.J. Thomson
b)
Ernest Rutherford
c)
John Dalton
d)
Niels Bohr
35.
What is the atomic number of iridium (Ir)?
a)
192.22
b)
192
c)
77
d)
53
36.
Who is famous for performing the gold foil experiment?
a)
J.J. Thomson
b)
Ernest Rutherford
c)
John Dalton
d)
Niels Bohr
37.
What is the mass number of silver-101? (elemental symbol: Ag)
a)
101
b)
54
c)
47
d)
107
38.
Who proposed the theory that electrons are located within discrete energy levels that surround the nucleus?
a)
J.J. Thomson
b)
Ernest Rutherford
c)
John Dalton
d)
Niels Bohr
39.
How many neutrons does an atom of argon-41 contain? (elemental symbol: Ar)
a)
18
b)
41
c)
23
d)
39
40.
Who discovered the nucleus?
a)
J.J. Thomson
b)
Ernest Rutherford
c)
John Dalton
d)
Niels Bohr
41.
Who is famous for performing the cathode ray tube experiment?
a)
J.J. Thomson
b)
Ernest Rutherford
c)
John Dalton
d)
Niels Bohr
42.
How many protons does an atom of iron-56 contain?
a)
56
b)
30
c)
26
d)
55
43.
Who was the first person to support is atomic theory with scientific evidence?
a)
J.J. Thomson
b)
Ernest Rutherford
c)
John Dalton
d)
Democritus
44.
How many neutrons does an atom of cadmium-104 contain? (elemental symbol: Cd)
a)
94
b)
48
c)
112
d)
56
45.
Which atomic model consisted of negatively charged particles (electrons) randomly distributed within a uniformly positive sphere?
a)
"Billiard Ball" Model
b)
"Planetary" Model
c)
"Rutherford" Model
d)
"Plum Pudding" Model
46.
Which has a charge of +1?
a)
proton
b)
neutron
c)
electron
d)
atom
47.
How many neutrons are in an atom of chlorine-35?
a)
17
b)
18
c)
35
d)
34
48.
Which element has 14 protons?
a)
nitrogen
b)
silicon
c)
aluminum
d)
sulfur
49.
Write the formula for Calcium Iodide.
a)
CaI
b)
Ca2I
c)
CaI2
d)
Ca2I2
50.
What is the name of the compound CoCl2
a)
cobalt (II) chloride
b)
monocobalt dichloride
c)
Chlorous cobalt
51.
What is the name of the compound KClO3
a)
potassium chlorate
b)
potassium chlorine
c)
Potassium chlorine trioxygen
52.
What is the name of the compound Cd(NO3)2
a)
Cadmium Nitrite
b)
Cadmium Nitrate
c)
Cadmium (I) Nitride
53.
What is the formula for iron (III) chloride
a)
FeCl
b)
FeCl3
c)
FeClO3
d)
Fe3Cl
54.
Write the formula for copper (I) phosphide?
a)
Cu3P
b)
CuP
c)
Cu1P
d)
CuP3
55.
NH4Cl
a)
ammonium chloride
b)
ammonium chlorine
c)
nitrogen hydrogen chloride
d)
nitrogen chloride
56.
PO43-
a)
phosphite
b)
phosphate
c)
perchlorate
d)
permanganate
57.
C2H3O2-
a)
carbonate
b)
chlorate
c)
acetate
d)
chromate
58.
Name this compound:
CaCO3
CaCO3
a)
Calcium carbon oxide
b)
Calcium carbonate
c)
Calcium carbonate
d)
Carbonate calcide
59.
lithium cyanide
a)
Li4C
b)
LiCN
c)
Li3N
d)
CnLi
60.
Is the formula for barium carbonate BaCO3? If not, what would the right formula be?
a)
It is correct
b)
It is not. It should be BaCO
c)
It is not. It should be Ba2CO3
d)
Its is not. It should be Ba3CO2
61.
LiOH
a)
lithium hydrogen oxide
b)
lithium hydroxide
c)
lithium monohydroxide
d)
lithium oxide
62.
NO2
a)
nitrite
b)
nitrate
c)
nitrogen dioxide
d)
mononitrogen dioxide
63.
boron trichloride
a)
BCl3
b)
BClO3
c)
BaCl2
d)
B3Cl
64.
Is the formula for magnesium hydroxide, MgOH2?. If not, what should the formula be?
a)
Mg(OH)2
b)
MgOH
c)
MgO2H2
d)
Mg2OH
65.
chromiun(III) chloride
a)
CrCl
b)
CrCl3
c)
Cr3Cl
d)
ClCr3
66.
How many sig figs are there?
100.00
100.00
a)
1
b)
3
c)
4
d)
5
67.
How many sig figs are there?
100000000
100000000
a)
1
b)
9
c)
10
68.
How many sig figs are there?
4004
4004
a)
1
b)
2
c)
3
d)
4
69.
How many sig figs are there?
0.000008
0.000008
a)
1
b)
2
c)
6
d)
7
70.
How many sig figs are there?
0.00400
0.00400
a)
1
b)
3
c)
5
d)
6
71.
How many sig figs are there?
9009.00
9009.00
a)
2
b)
4
c)
5
d)
6
72.
How many sig figs are there?
0.0009009090000
0.0009009090000
a)
3
b)
10
c)
14
73.
How many sig figs are there?
4000.
4000.
a)
1
b)
3
c)
4
74.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
75.
Round 1009 to three sig figs
a)
100
b)
101
c)
1010
d)
1000
76.
What is 78.5 rounded to one significant figure?
a)
79
b)
78.5
c)
70
d)
80
77.
What is 98.907 rounded to 1 significant figure?
a)
98.9
b)
90
c)
100
d)
98.91
78.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
100 %
