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Year 9 Structure of the atom

Total questions: 42

Worksheet time: 32mins

Name
Class
Date
1.
The positive particles of an atom are 
a)
electrons 
b)
atoms
c)
neutrons 
d)
protons 
2.
The central region of an atom where its neutrons and protons are is called the
a)
nucleus 
b)
electron cloud
c)
core 
d)
center 
3.
Neutrons are
a)
negative
b)
positive
c)
neutral
d)
cows
4.
Most of the atom is filled with
a)
electrons
b)
empty space
c)
the nucleus
d)
protons
5.
An atom with atomic number 6 would have how many protons?
a)
6
b)
12
c)
3
d)
cannot be determined 
6.
Electrons have this type of charge...
a)
negative
b)
positive
c)
neutral
7.
How many electrons are in the element, Oxygen, with the atomic number of 8?
a)
7
b)
10
c)
8
d)
9
8.
How many protons are in the element, Sodium, with an atomic number of 11?
a)
23
b)
11
c)
13
d)
14
9.
True or False? Isotopes are atoms of the same element that differ in mass number and number of neutrons
a)
True
b)
False
10.
What is the atomic number for an element with three protons?
a)
2
b)
1
c)
3
d)
6
11.
What does the nucleus consist of?
a)
Protons + Electrons
b)
Neutrons + Electrons
c)
Atoms
d)
Protons + Neutrons
12.
Which particle has a similar mass to a proton?
a)
Electron
b)
Neutron
c)
Photon
d)
Marble
13.
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
14.

What is the charge of a proton in an atom?

a)

negative

b)

positive

c)

neutral

d)

none

15.

Which sub-atomic particles have a relative mass of 1?

a)

proton

b)

electron

c)

neutron

16.

What is the relative charge of a neutron?

(a)  

17.

The overall charge of any atom is zero because all atoms have an equal number of positive protons and negative (a)   .

18.

All atoms of the same element have the same number of (a)   in the nucleus.

19.

What is the mass number of sodium?

(a)  

20.

How many protons are there in an atom of helium?

a)

2

b)

4

c)

6

d)

8

21.

How many neutrons are there in an atom of helium?

a)

2

b)

4

c)

6

d)

8

22.
Which particle has a positive charge?
a)
electron
b)
orbital
c)
proton
d)
neutron
23.
Choose the particle that has no charge.
a)
nucleus
b)
neutron
c)
proton
d)
electron
24.
An electron has a _____ charge.
a)
negative
b)
positive
c)
neutral
25.
What is the number of protons that the element in this image contain?
a)
14
b)
7
c)
15
d)
18
26.

How many electrons are there in a sodium atom?

a)

11

b)

23

c)

12

d)

34

27.

How many electrons are there in the lowest energy level (first shell) of a sodium atom?

a)

2

b)

8

c)

11

d)

1

28.

How many electrons are there in the second energy level (second shell) of an aluminium atom?

a)

13

b)

2

c)

3

d)

8

29.

An oxygen atom has 8 electrons. What is the electronic structure of oxygen?

a)

2,6

b)

26

c)

2/6

d)

2.6

30.

A nitrogen atom has 7 electrons. What is the electronic structure of nitrogen?

a)

2,5

b)

7

c)

5,2

d)

3,4

31.

What is the electronic structure of boron?

a)

2,3

b)

5

c)

23

d)

3,2

32.

What is the electronic structure of chlorine?

a)

2,8,7

b)

2,7,8

c)

17

d)

278

33.

A carbon atom has 6 electrons. What is the electronic structure of carbon?

a)

2,4

b)

24

c)

2 4

d)

4,2

34.

Which of these is NOT part of an atom?

a)

Proton

b)

Neutron

c)

Electron

d)

Isotope

35.

The majority of elements found on the Periodic Table are ______

a)

Metals

b)

Non-metals

c)

Metaloids

d)

Gasses

36.

The periodic table is arranged in horizontal rows called:

a)

columns

b)

groups

c)

periods

37.

The periodic table is arranged in vertical columns called:

a)

columns

b)

groups

c)

periods

38.

The group number of an element tells you….

a)

How many electrons are in the outer shell

b)

How many electrons are in the innermost shell

c)

How many shells the atom has

d)

Nothing

39.

The period number of an atom tells you…

a)

the number of electron shells in the atom.

b)
the number of protons in the atom.
c)
the number of neutrons in the atom.
d)
the number of electrons in the atom.
40.

In which group of the periodic table would you find an atom with the electron structure 2.6?

a)

2

b)

8

c)

6

41.

In which period of the periodic table would you find an atom with the electron structure 2.6?

a)
4th period
b)
2nd period
c)
6th period
d)
8th period
42.

Which of these is the correct number of electrons the first 3 shells of an atom can hold?

a)

2.8.8.

b)

2.8.2

c)

2.8.2

d)

2.2.2

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