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WorksheetsAtomic Structure
Total questions: 13
Worksheet time: 7mins
Name
Class
Date
1.
X atom has 10 proton and 11 neutron. How many electron does it have?
a)
10
b)
11
c)
12
d)
13
2.
an atom has 10 electrons and 8 neutrons. How many protons does it have?
a)
8
b)
18
c)
10
d)
2
3.
Which subatomic particle determines the identity of an element?
a)
protons
b)
neutrons
c)
electrons
4.
The mass number of an isotope is equal to the number of ______ in an atom.
a)
Protons
b)
Neutrons
c)
Protons + Neutrons
d)
Electrons
5.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
6.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus
d)
Electrons
7.
Atoms of the same element with a different number of neutrons
a)
Ion
b)
alloy
c)
Isotope
d)
Quarks
8.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
9.
How many electrons does this atom have?
a)
2
b)
4
c)
6
d)
10
10.
Which of the following determines the identity of an element?
a)
number of protons
b)
atomic mass
c)
number of neutrons
d)
number of shells
11.
The term "neutral" means
a)
having only a little bit of charge
b)
having a positive charge
c)
having a negative charge
d)
having no charge at all
12.
Which two subatomic particles make up the nucleus of an atom?
a)
Protons and Electrons
b)
Neutrons and Electrons
c)
Electrons and Protons
d)
Protons and Neutrons
13.
The negative charge particles that float around the outside of the atom
a)
Proton
b)
Neutron
c)
Electron
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