WorksheetsThe Atom
Total questions: 10
Worksheet time: 30mins
Name
Class
Date
1.
A particle that moves around the nucleus of an atom is an _______.
a)
Proton
b)
Neutron
c)
Electron
d)
Quark
2.
Particles in an atom that are neutral and have no charge are _____.
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
3.
The positive particles of an atom are called _____.
a)
electrons
b)
positrons
c)
neutrons
d)
protons
4.
What does the nucleus of an atom contain?
a)
Electrons and neutrons
b)
Protons and neutrons
c)
Neutrinos and positrons
d)
DNA and RN
5.
The identity of the element is always the number of ...
a)
neutrons.
b)
electrons.
c)
ions.
d)
protons.
6.
What is the mass number?
a)
the number of protons
b)
the sum of the number of protons and the number of neutrons in the nucleus of an atom
c)
the number of electrons
d)
the number of neutrons
7.
The subatomic particles are called:
a)
protons, nucleus and electrons
b)
protons, electrons and neutrons
c)
protons, positives and negatives
d)
cloud, shell and quarks
8.
What is the mass number of this atom?
a)
1
b)
3
c)
4
d)
7
9.
Which two particles determine the net charge of the atom?
a)
the number of protons
b)
Protons & electrons
c)
the number of electrons
d)
Protons and neutrons
10.
What is at the center of every atom?
a)
An electron
b)
A compound
c)
A molecule
d)
A nucleus
100 %
