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Ions

Total questions: 23

Worksheet time: 14mins

Name
Class
Date
1.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
2.
Why are ions formed?
a)
To make our lives difficult
b)
Because atoms want 8 valence electrons
c)
Because atoms have the same number of protons and electrons
d)
Because atoms gained neutrons
3.
When an atom loses a valence electron, it becomes a(n) _____________ ion.
a)
positive
b)
negative
c)
neutral
d)
polyatomic
4.
Negative ions form when atoms _________ valence electrons.
a)
lose
b)
gain
c)
share
5.
The positive particles of an atom are 
a)
electrons 
b)
positrons 
c)
neutrons 
d)
protons 
6.

Which particles change the charge in atoms when ions are formed?

a)

Protons

b)

Electrons

c)

Neutrons

7.
What is the charge of an atom that has lost one electron?
a)
-1
b)
-2
c)
+1
d)
+2
8.

Anions are

a)

Negative ions

b)

Neutral ions

c)

Positive ions

9.

Metals are:

a)

Usually cations

b)

Usually anions

10.

Cations are

a)

negative ions

b)

neutral electrons

c)

positive ions

11.
What is the charge of an atom that has gained one electron?
a)
-1
b)
-2
c)
+1
d)
+2
12.
What is the ionic symbol for a Gallium atom?
a)
Ga+3
b)
Ga-3
c)
Ga+2
d)
Ga-2
13.

O ionizes to a charge of ________.

a)

+1

b)

+2

c)

-1

d)

-2

14.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
15.
This is a correct dot diagram for nitrogen (N)
a)
true
b)
false
16.
How many electrons will a neutral potassium atom lose to become stable?
a)
1
b)
2
c)
8
d)
7
17.

Electrons in the outermost shell are known as

a)

passive electrons

b)

valence electrons

c)

jumping electrons

d)

radioactive electrons

18.

What is the formula unit of a bromide ion?

a)

Br-7

b)

Br+7

c)

Br+1

d)

Br-1

19.

When forming compounds atoms tend to achieve the electron configuration of noble gases.

a)

TRUE

b)

FALSE

20.

What is meant by an octet?

a)

18

b)

80

c)

0.8

d)

8

21.

Elements in the Halogen group that form ions are known as

a)

Halodes

b)

Halides

c)

Halogenides

d)

Halogens

22.

What is the proper name of a lithium atom that loses one electron?

a)

Lithium ion

b)

Lithium

c)

Lithide

d)

Lithide ion

23.

What is the name of a selenium atom that gains 2 electrons?

a)

selenium

b)

selenide

c)

selenium ion

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