WorksheetsIons and isotopes warm up
Total questions: 12
Worksheet time: 7mins
Name
Class
Date
1.
Negative ions are called
a)
Cations
b)
Electrons
c)
Anions
d)
Neutrons
2.
When an atom loses a valence electron, it becomes a(n) _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
3.
Positive ions form when atoms _________ valence electrons.
a)
lose
b)
gain
c)
share
d)
gain or share
4.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
5.
What charge does an atom have if it LOSES an electron?
a)
Positive (+)
b)
Negative (-)
6.
When an atom LOSES an electron it is a
a)
cation
b)
anion
7.
Ions are:
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
8.
A negative ion is a
a)
cation
b)
anion
9.
Valence electrons are:
a)
Electrons farthest away from the nucleus
b)
Electrons closest to the nucleus
c)
Electrons that just come and go - they don't stay with the atom
10.
What charge does an atom have if it GAINS an electrons?
a)
Positive (+)
b)
Negative (-)
11.
What is the number of protons?
a)
34
b)
16
c)
18
d)
S
12.
What is the definition of isotope?
a)
atoms of an element with different numbers of neutrons.
b)
materials break down over time at a very consistent rate
100 %
