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WorksheetsAtom
Total questions: 7
Worksheet time: 4mins
Name
Class
Date
1.
The smallest piece of matter that can exist by itself.
a)
neutron
b)
proton
c)
atom
d)
molecule
2.
The heaviest part at the center of an atom.
a)
the heart
b)
the core
c)
the nucleus
d)
the middle
3.
Extremely small pieces of matter that are smaller than an atom.
a)
molecules
b)
mass numbers
c)
subatomic particles
d)
subatoms
4.
The part of an atom with a negative electrical charge, which moves around the atom's nucleus.
a)
isotope
b)
proton
c)
electron
d)
mass number
5.
A type of particle with a positive electrical charge that is found in the nucleus of all atoms.
a)
proton
b)
electron
c)
positron
d)
optimist
6.
The number of protons found in the nucleus of an atom.
a)
nuclear number
b)
atomic number
c)
nucleus number
d)
core number
7.
The total number of protons and neutrons in an atom.
a)
nil number
b)
final number
c)
total number
d)
mass number
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