WorksheetsChemistry Unit REVIEW
Total questions: 35
Worksheet time: 26mins
Name
Class
Date
1.
How many electrons does a Cu atom have?
a)
63
b)
29
c)
92
d)
34
2.
How many protons does lithium have?
a)
3
b)
6.941
c)
1
d)
4
3.
How many VALENCE electrons does lithium have?
a)
3
b)
6.941
c)
1
d)
4
4.
What is the atomic mass of Gold?
a)
79
b)
196.9665
c)
117
d)
275
5.
How many electrons does an Iodine atom have?
a)
53
b)
126
c)
73
d)
179
6.
What subatomic particles would you find in the nucleus of an atom?
a)
Protons only
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons and Electrons
7.
Which subatomic particles contribute the most to the mass of an atom?
a)
Protons, Neutrons, Electrons
b)
Protons only
c)
Protons and Electrons
d)
Protons and Neutrons
8.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
9.
How many levels can the fist level of an BOHR model hold??
a)
2
b)
4
c)
6
d)
8
10.
What element is represented in this Bohr Model?
a)
Carbon
b)
Hydrogen
c)
Aluminum
d)
Lithium
11.
What is the name of this element?
a)
Lithium
b)
Boron
c)
Carbon
d)
Neon
12.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
13.
What is the atomic number of this atom?
a)
2
b)
4
c)
6
d)
none of the above
14.
The number at the bottom of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
chemical symbol
d)
element name
15.
The number at the top of each square on the periodic table is the ...
a)
atomic number
b)
atomic mass
c)
Chemical Symbol
d)
Element Name
16.
Beryllium is in group number______.
a)
Group 2
b)
Group 3
c)
Group 4
d)
Group 7
17.
If a material can easily be drawn into the shape of a wire, it is
a)
Ductile
b)
Magnetic
c)
Malleable
d)
Reactive
18.
Good conductor of heat
a)
Metal
b)
Nonmetal
19.
Most elements on the periodic table are this type.
a)
Gases
b)
Nonmetals
c)
Metals
d)
Metalloids
20.
a)
Periods
b)
Groups
21.
a)
Periods
b)
Groups
22.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
23.
Element or compound?
H2O
H2O
a)
element
b)
compound
24.
Element or compound?
O2
O2
a)
Element
b)
Compound
25.
Which of the following is a compound?
a)
Co
b)
O2
c)
C
d)
CO2
26.
Which is the correct formula for:
three hydrogen (H)
one sulfur (S)
four oxygen (O)
three hydrogen (H)
one sulfur (S)
four oxygen (O)
a)
H3SO4
b)
HSO4
c)
H4S3O
d)
H2O
27.
The red numbers in the image below represent ________
a)
subscripts
b)
coefficients
c)
I don't know, and don't want to try
d)
None of the answers are correct
28.
The blue numbers in the image below represent ________
a)
I don't know, and don't want to try
b)
coefficients
c)
subscripts
d)
none of the answers are correct
29.
In a chemical reaction, everything to the rightof the arrow is called ______________.
a)
Products
b)
Yields
c)
Molecules
d)
Reactants
30.
The substances at the beginning of a chemical equation are called the ____
a)
product
b)
yield
c)
chemical symbol
d)
reactants
31.
Is the following equation balanced or unbalanced?
Fe + S --> FeS
Fe + S --> FeS
a)
balanced
b)
unbalanced
32.
How many O's are in Al₂(SO₄)₃
a)
4
b)
12
c)
7
d)
24
33.
Balance this equation...
HgO --> Hg + O2
HgO --> Hg + O2
a)
It is balanced
b)
2HgO --> Hg + O2
c)
2HgO --> 2Hg + O2
d)
I don't know...Oh well!
34.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
35.
Number of H in 3(NH₄)₂CrO₄
a)
4
b)
2
c)
8
d)
24
100 %
