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Year 9 Matter Review Quiz

Total questions: 27

Worksheet time: 31mins

Name
Class
Date
1.
A pure substance containing only one kind of atom.
a)
element
b)
mixture
c)
compound
2.

Select the TRUE statement.

a)

Atoms of the same element have the same number of protons.

b)

The mass number of an element is the total number of protons and electrons.

c)

Atoms of the same element have the same number of neutrons.

d)

The mass number of an element is equal to the number of electrons.

3.

An atom has four protons and five neutrons. Its atomic number is:

a)

4

b)

5

c)

9

d)

20

4.

An atom has four protons and five neutrons. Its mass number is:

a)

4

b)

5

c)

9

d)

20

5.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

6.
Subatomic particles with a positive charge
a)
neutrons
b)
atomic mass
c)
protons
d)
isotopes
7.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
8.
A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass
a)
Electron Shells
b)
Orbitals
c)
Electron Cloud
d)
Nucleus
9.
How many protons does an aluminium atom have? (Use the image to help you)
a)
27
b)
14
c)
40
d)
13
10.
How many neutrons does a sodium atom have? (Use the image to help you)
a)

23

b)

11

c)

12

d)

34

11.
Which subatomic particles are found in the nucleus of an atom?
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Neutrons and Electrons
d)
Protons, Neutrons and Electrons
12.
What electrical charge does a proton have?
a)
+1
b)
0
c)
-1
d)
+2
13.
Complete the missing label on the diagram.
a)
Neutron
b)
Centre
c)
Nucleus
d)
Sub atomic particle
14.

How many electrons does this atom have?

a)

2

b)

4

c)

6

d)

10

15.
Where is most of the mass in an atom located?
a)
in the nucleus
b)
in the protons
c)
in the neutrons
d)
in the electrons
16.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
17.

What is a negative ion called?

a)

anion

b)

cation

c)

covalent

d)

isotope

18.

What is a positive ion called?

a)

anion

b)

cation

c)

isotope

d)

covalent

19.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
20.
What is Half-life?
a)
The amount of time it takes for some of the nuclei in a sample of the isotope to decay
b)
The amount of time it takes for half the electrons in a sample of the isotope to decay
c)
The amount of time it takes for half the nuclei in a sample of the isotope to decay
d)
the amount of time it takes to double the nuclei in a sample of the isotope to decay
21.

What type of decay is shown here

23892U ---> 23490Th + 42He.

a)

alpha

b)

beta

c)

gamma

22.
The half-life of strontium-90 is 25 years. How much strontium-90 will remain after 100 years if the initial amount is 4.0 g?
a)
3.0g
b)
0.25mg
c)
0.3g
d)
0.25g
23.

Which particles make up an alpha particle?

a)

two protons and two electrons

b)

two electrons and two neutrons

c)

one proton and one neutron

d)

two protons and two neutrons

24.

An unstable nuclei will break up in a process called radioactive _______________.

a)

decay

b)

decomposition

c)

emission

d)

reduction

25.
How many valence electrons are found in atoms of group 1?
a)
7
b)
6
c)
4
d)
1
26.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

27.

Match the Following

a)

Element

1.

A substance that cannot be broken down into simpler substances by chemical means.

b)

Atom

2.

The smallest unit of an element that keeps the element’s chemical properties.

c)

Nucleus

3.

The dense center of an atom containing protons and neutrons.

d)

Proton

4.

Positively charged particles found in the nucleus of an atom.

e)

Neutron

5.

Particles with a neutral charge found in the nucleus of an atom.

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