Worksheets9C Atoms
Total questions: 14
Worksheet time: 14mins
Name
Class
Date
1.
The central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
2.
An atom with atomic number 6 would have how many protons
a)
6
b)
12
c)
3
d)
cannot be determined
3.
True or False? Neutrons have a negative charge
a)
True
b)
False
4.
How many electrons does this oxygen atom have?
a)
16
b)
8
c)
24
d)
6
5.
How many electrons does the first shell hold?
a)
1
b)
2
c)
4
d)
8
6.
How many electrons can be in the 2nd energy level hold?
a)
1
b)
2
c)
4
d)
8
7.
If both protons and neutrons are found in the nucleus, why is it positive?
a)
The reason it is positive is because neutrons have a positive charge and protons have a negative charge.
b)
The reason it is positive is because neutrons have a negative charge and protons have a positive charge
c)
The reason it is positive is because neutrons have no charge and protons have a positive charge.
d)
The reason it is positive is because neutrons have no charge and protons have a negative charge
8.
The part of the salt that caused the colour in the flame test was
a)
chloride
b)
the metal
c)
the gas
9.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
10.
How many protons does this isotope of titanium have?
a)
48
b)
22
c)
26
d)
70
11.
which atom has 4 neutrons?
a)
Li-6
b)
Li-7
c)
Li-8
d)
they have the same # of neutrons
12.
Two isotopes of carbon are carbon-12 and carbon-14. These isotopes differ from one another by two protons.
a)
true
b)
false
13.
Which of the following statements regarding subatomic particles is incorrect?
a)
Protons are positively charged particles and neutrons have no charge.
b)
The relative mass of the proton, electron and neutron the same.
c)
In a neutral atom the number of protons equals the number of electrons.
d)
Isotopes of an element have the same number of protons but a different number of neutrons.
14.
Isotopes of the same element have the same number of
a)
protons
b)
neutrons
c)
electrons
d)
not enough information
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