WorksheetsAtoms and ions
Total questions: 16
Worksheet time: 11mins
Name
Class
Date
1.
The atomic number is equal to _.
a)
the number of protons and electrons
b)
the number of neutrons only
c)
the total number of protons and neutrons
d)
the number of protons neutrons and electrons
2.
What is the charge on a lithium atom that looses 1 electron?
a)
+1
b)
0
c)
-1
d)
-2
3.
Is the element shown in this image an ion, isotope or normal atom?
a)
atom
b)
isotope
c)
cation (+ ion)
d)
anion (- ion)
4.
The atomic mass is equal to _.
a)
the number of protons only
b)
the number of neutrons only
c)
the total number of protons and neutrons
d)
the number of protons, neutrons, and electrons.
5.
What is the atomic number of Fe? (click to see image)
a)
26
b)
55.845
c)
56
d)
None of these
6.
How many neutrons does B (Boron) contain?
a)
5
b)
11
c)
6
d)
10.811
7.
How many neutrons does Lithium have (atomic mass = 6.94)
a)
3
b)
4
c)
6.94
d)
24.94
8.
What charge does an atom have when it GAINS electrons?
a)
Positive
b)
Negative
c)
Neutral
9.
What is a representation of an ion?
a)
Li
b)
Na-22
c)
O-2
10.
Two atoms of different elements will definitely have different numbers_____
a)
Nuclei
b)
Protons
c)
Neutrons
d)
Electrons
11.
An ion forms when an atom gains or loses
a)
Protons
b)
Neutrons
c)
Electrons
12.
A neutral atom would become an ion that has a charge of 2+ by
a)
Losing two protons
b)
Losing two neutrons
c)
Losing two electrons
13.
He proposed the atomic theory.
a)
Bohr
b)
Chadwick
c)
Dalton
d)
Rutherford
14.
What is the chemical symbol of this element?
a)
79
b)
Au
c)
AU
d)
gold
15.
A row on the Periodic Table of Elements
a)
family
b)
period
c)
row
d)
isotope
16.
What is the symbol for Potassium?
a)
P
b)
K
c)
Pb
d)
Pd
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