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Worksheets2.3 Atomic Structure
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
Subatomic particles with a negative charge
a)
Electrons
b)
Neutrons
c)
Protons
d)
Quarks
2.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
3.
Water is an element
a)
true
b)
false
4.
DIFFERENT kinds of atoms chemically combined to form a substance are
a)
Mixture
b)
Element
c)
Compound
d)
Substance
5.
In which way are protons and electrons the same in an atom?
a)
same mass
b)
same number of particles
c)
same charges
6.
The mass number of an isotope is equal to the number of ______ in an atom.
a)
Protons
b)
Neutrons
c)
Protons + Neutrons
d)
Electrons
7.
Which subatomic particle determines the identity of an element?
a)
protons
b)
neutrons
c)
electrons
8.
Which subatomic particle determines the charge of an atom?
a)
protons
b)
neutrons
c)
electrons
9.
The electron is not included in the calculations for the atomic mass because
a)
It has negative charge
b)
It is located in the outer energy levels of the atom
c)
Its mass is basically zero
d)
It attracts neutral particles
10.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
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