WorksheetsParts of an Atom Review
Total questions: 17
Worksheet time: 10mins
Name
Class
Date
1.
Where are electrons found?
a)
inside the nucleus
b)
in the cloud
c)
next to the protons
d)
next to the neutrons
2.
What is the middle of the atom called?
a)
nucleus
b)
electron
c)
neuron
d)
electron cloud
3.
Where is the majority of the mass of an atom found?
a)
nucleus
b)
inside the electron cloud
c)
in the electrons
d)
outside the electron cloud
4.
Electrons have what charge?
a)
negative
b)
positive
c)
neutral
5.
What is the charge of a proton?
a)
negative
b)
positive
c)
neutral
6.
What is the charge of a neutron?
a)
positive
b)
negative
c)
neutral
7.
If the number of positive protons equals the number of negative electrons then the charges cancel and the atom is electrically ___________?
a)
neutral
b)
negative
c)
positive
8.
The atomic mass units of _____________ and _____________ have the same weight of 1 amu.
a)
protons and neutrons
b)
neutrons and electrons
c)
electrons and protons
9.
In the atom, the lightest particle is the _____________ with a weight of 1/1840 amu.
a)
proton
b)
neutron
c)
electron
10.
Which two particles make up the nucleus of an atom?
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Molecules and Compounds
d)
Neutrons and Electrons
11.
What is the role of an electron in an atom?
a)
Electrons live inside the nucleus and carry a neutral charge.
b)
Electrons circle the nucleus and have a positive charge.
c)
Electrons circle the nucleus and have a negative charge.
d)
Electrons live inside the nucleus and have a negative charge.
12.
In neutral atoms, the number of electrons is equal to what?
a)
number of protons
b)
number of neutrons
c)
number of protons plus electrons
d)
none of these
13.
An electron cloud is mostly made up of what?
a)
protons
b)
neutrons
c)
electrons
d)
empty space
14.
A proton's mass is equal to how many atomic mass unit or units?
a)
1 amu
b)
2 amu
c)
0 amu
d)
3 amu
15.
A neutron's mass is equal to how many atomic mass unit(s)?
a)
0 amu
b)
1 amu
c)
2 amu
d)
3 amu
16.
The subatomic particle with a neutral charge is:
a)
protons
b)
electrons
c)
neutrons
d)
cloud
17.
What does amu stand for?
a)
atomic mass unit
b)
atomic molecular unit
c)
astronomy mass universe
d)
atom molecules unit
100 %
