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Chemistry Mini Unit
Test Description: Atoms Periodic Table of the Elements Chemical and Physical Change
Instructions: Answer all questions to get your test result.
1) Oxygen has an atomic number of
A
8
B
6
C
10
D
16
2) The symbol for iron is
A
Ir
B
Ag
C
Fe
D
I
3) The atomic mass (weight) for Hydrogen is
A
1
B
2
C
3
D
0
4) The subatomic particles of an atom are
A
electrons, negative, protons, positive
B
protons, positive, neutrons
C
protons, neutrons, electrons
D
electrons, protons, neutral
5) Electrons have a ______ electrical charge
A
positive
B
negative
C
electrical
D
neutral
6) The number of protons in a Calcium atom are
A
40
B
27
C
20
D
6
7) The atomic number for nitrogen is
A
7
B
14
C
20
D
28
8) Neutrons have a ______ electrical charge
A
positive
B
electrical
C
neutral
D
negative
9) The number of electrons in a Neon atom are
A
30
B
40
C
20
D
10
10) The symbol for sodium is
A
K
B
Na
C
S
D
So
11) Pick the example of a molecule of a compound
A
C
B
O2
C
CO2
D
C2
12) The nucleus of an atom is made of
A
electrons and protons
B
protons and neutrons
C
protons
D
neutrons
13) The symbol for aluminum is
A
Al
B
Au
C
Am
D
A
14) Potassium has an atomic number of
A
58
B
30
C
22
D
19
15) The number of neutrons in a carbon atom are
A
6
B
4
C
12
D
18
16) The number of protons in a Cobalt atom are
A
91
B
27
C
59
D
32
17) Protons have a ______ electrical charge
A
negative
B
no
C
positive
D
nuetral
18) The number of electrons in an iron atom are
A
26
B
56
C
30
D
82
19) The atomic mass (weight) for helium is
A
6
B
8
C
4
D
2
20) The number of neutrons in a potassium atom are
A
9
B
19
C
39
D
20
*select an answer for all questions
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