Worksheetsunit 5 lesson 3
Total questions: 10
Worksheet time: 6mins
Name
Class
Date
1.
an atom has multiple parts
a)
yes
b)
no
2.
the basic unit of a chemical element
a)
molecules
b)
atoms
c)
protons
d)
nuetrons
3.
what is a proton
a)
subatomic particles that have a positive charge
b)
the basic building block of everything
c)
a part of an molocule
4.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
5.
True or False? Neutrons have a negative charge
a)
True
b)
False
6.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
7.
The 3 subatomic particles in an atom are:
a)
Protons, neutrons, and elections
b)
Electrons, Protons, and neutrons
c)
Protists, electrons, and neutrons
d)
Only electrons
8.
the number of protons in an atom
a)
mass
b)
atomic number
c)
molecular number
9.
The sum of the numbers of protons and neutrons in the nucleus of an atom.
a)
Mass number
b)
Atomic number
c)
Isotope
d)
Ion
10.
A subatomic particle that orbits an atom's nucleus, has a negative charge, and has very little mass
a)
Proton
b)
Neutron
c)
Electron
d)
Isotope
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