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Structure of an atom

Total questions: 25

Worksheet time: 17mins

Name
Class
Date
1.
What number indicates the nucleus?
a)
1
b)
2
c)
3
d)
4
2.
What is at the center of every atom?
a)
An electron
b)
A compound
c)
A molecule
d)
A nucleus
3.
The particles with no charge in an atom are the _______.
a)
electrons
b)
neutrons
c)
protons
d)
protons and neutrons
4.
a)
Nucleus, positive
b)
Nucleus, negative
c)
Nucleus, neutral
d)
Electron Cloud, positive
5.

What is the atomic number of chlorine?

a)

35

b)

18

c)

7

d)

17

6.

How many protons are there in an atom of aluminium?

a)

27

b)

13

c)

14

d)

17

7.

What is the symbol of manganese?

a)

Mg

b)

M

c)

Ma

d)

Mn

8.
What are valence electrons?
a)
electrons on the first orbital always
b)
nucleus
c)
the outermost shell
d)
the number of electrons on the outermost orbital
9.
Oxygen’s atomic number is 8. This means that an oxygen atom must have
a)
8 electrons
b)
8 protons
c)
8 neutrons
d)
a mass number of 8
10.

Thompson was the first to discover a subatomic particle - the electron. What are the others?

a)

neutrons & positrons

b)

protons & neutrons

c)

positrons & quarks

d)

protons & positrons

11.

James Dalton proved that the true nature of the atom could best be described as resembling "plum pudding."

a)

True

b)

False

12.
What is the atomic number of the atom pictured? 
a)
11
b)
12
c)
22
d)
23
13.
Which particles make up the nucleus of an atom?
a)
protons and neutrons
b)
electrons and protons
c)
electrons, protons, and neutrons
d)
electrons and neutrons
14.
How many neutrons in C-14?
a)
6
b)
7
c)
14
d)
8
15.
Which statement best describes an electron?
a)
Smaller mass than a proton and a negative charge
b)
Smaller mass than a proton and a positive charge
c)
Greater mass than a proton and a negative charge
d)
Greater mass than a proton and a positive charge
16.
What is the mass number?
a)
the number of protons
b)
the sum of the number of protons and the number of neutrons in the nucleus of an atom 
c)
the number of electrons
d)
the number of neutrons
17.

What element has only one electron?

a)

Helium

b)

Carbon

c)

Lithium

d)

Hydrogen

18.

What is group 18 on the periodic tabled called?

a)

Alkali metals

b)

Noble gases

c)

Halogens

d)

Alkaline earth metals

19.

Who came up with the idea for the 'plum pudding' atomic structure?

a)

Dalton

b)

J.J. Thomson

c)

Rutherford

d)

Bohr

20.

Ionic bonding is between a

a)

nonmetal and nonmetal

b)

metal and nonmetal

c)

metal and metal

d)

Depends on the situation

21.

Covalent bonding is between a

a)

nonmetal and nonmetal

b)

metal and nonmetal

c)

metal and metal

d)

It depends on the situation

22.

What do positive ions tend to do?

a)

lose electrons

b)

gain electrons

c)

lose protons

d)

gain protons

23.

What is the chemical formula for Lithium Nitride?

a)

Li3N

b)

LiN3

c)

NLi3

d)

N3Li

24.

What is the ionic formula for a bond between Calcium and Phosphorus?

a)

Ca2P3

b)

Ca3P2

c)

Ca2P5

d)

P5Ca2

25.

What category of element usually forms a positive ion?

a)

Metals

b)

Nonmetals

c)

metalloids

d)

Noble gases

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