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Atomic structure, Isotopes, Ions

Total questions: 24

Worksheet time: 36mins

Name
Class
Date
1.
What is the nucleus? 
a)
The center (middle) of the atom
b)
The outside electron cloud
c)
The area inside the electron charge
d)
The positive or negative charge of the atom 
2.
What two sub-atomic particles are inside the nucleus of the atom? 
a)
Protons and Electrons
b)
Electrons and Neutrons
c)
Protons and Nucleus 
d)
Protons and Neutrons 
3.
Which sub-atomic particle is OUTSIDE the nucleus of the atom? 
a)
Electron
b)
Neutron
c)
Proton
d)
Nucleus 
4.
What two particles make up the ATOMIC MASS of an element? 
a)
Protons and Neutrons
b)
Protons and Electrons
c)
Electrons and Nucleus
d)
Electrons and Neutrons
5.
Which particle makes up the ATOMIC NUMBER of an element? 
a)
Protons
b)
Electrons
c)
Protons and Neutrons
d)
Neutrons
6.

The positively charged sub-atomic particles is...

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

e)

Shell

7.

The negatively charged sub-atomic particles is...

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

e)

Shell

8.

The sub-atomic particle with a charge of zero is...

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

e)

Shell

9.

The central part of the atom is...

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

e)

Shell

10.

Atoms are big enough to see with the human eye.

a)

True

b)

False

11.

What is this likely to represent?

a)

Proton

b)

Neutron

c)

Electron

12.

What is this likely to represent?

a)

Proton

b)

Neutron

c)

Electron

13.
An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.
a)
20
b)
10
c)
5
d)
25
14.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
15.
What is the element name of the atom pictured? 
a)
Fluorine
b)
Neon
c)
Argon
d)
Potassium
16.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
17.

How many electrons does oxygen have?

a)

8

b)

16

c)

0

d)

15

18.
What is the atomic number of Fe? (click to see image)
a)
26
b)
55.845
c)
56
d)
None of these
19.

An atom that has gained or lost electrons in an attempt to become stable/bond with another atom.

a)

Normal/Neutral Atom

b)

Ion

c)

Isotope

20.

If an atom has a charge of +3 and an atomic number of 5 it should have _______ electrons.

a)

1

b)

2

c)

3

d)

4

21.

If an atom has a charge of -2 and an atomic number of 16 it should have _______ electrons.

a)

14

b)

16

c)

18

d)

20

22.
An ion forms when an atom gains or loses
a)
Protons
b)
Neutrons
c)
Electrons
23.

What is an isotope?

a)

Atoms with the same number of protons but different number of neutrons

b)

Atoms with the same number of protons but different number of electrons

c)

Atoms with the same number of neutrons but different number of protons

d)

Atoms with the same number of electrons but different number of protons

24.

What are ions?

a)

Atoms that have gained or lost electrons

b)

Atoms that have gained or lost protons

c)

Atoms that have gained or lost neutrons

d)

Atoms that have gained or lost energy

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