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