WorksheetsAtom
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
2.
What is the atomic mass of "F"
a)
9
b)
18
c)
17
d)
19
3.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
4.
The positive particles of an atom are
a)
electrons
b)
positrons
c)
neutrons
d)
protons
5.
the central region of an atom where its neutrons and protons are is its
a)
nucleus
b)
electron cloud
c)
core
d)
center
6.
All matter is made of what?
a)
energy
b)
atoms
c)
electrons
d)
compounds
7.
electrons have this type of charge?
a)
negative
b)
positive
c)
neutral
8.
What is the mass of an atom if it has 11 protons, 12 neutrons, and 11 electrons?
a)
22
b)
11
c)
34
d)
23
9.
What are the 3 particles that make-up the atom?
a)
protons, neutrons, and isotopes
b)
neutrons, isotopes, and electrons
c)
positives, negatives, and electrons
d)
protons, neutrons, and electrons
10.
Who discovered the electron?
a)
Rutherford
b)
Thomson
c)
Milikan
d)
Dalton
100 %
