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Worksheets

Grade 8 Test prep

Total questions: 35

Worksheet time: 3hrs 55mins

Name
Class
Date
1.

The elemental symbol for Gold is

a)

Au

b)

Ag

c)

Gd

d)

Hg

2.

The atomic number of an element

a)

= number of electrons + number of neutrons

b)

= number of electrons + number of protons

c)

= number of electrons = number of protons

d)

= number of protons + number of neutrons

3.

Fluorine has

a)

10 neutrons

b)

10 electrons

c)

9 neutrons

d)

none of the above

4.

Alkali metals are found in

a)

Group 1

b)

Group 2

c)

Group 17

d)

Group 18

5.

Alkaline-earth metals are found in

a)

Group 1

b)

Group 2

c)

Group 17

d)

Group 18

6.

Halogens are found in

a)

Group 1

b)

Group 2

c)

Group 17

d)

Group 18

7.

Noble gases are found in

a)

Group 1

b)

Group 2

c)

Group 17

d)

Group 18

8.

The following are all metals

a)

Lithium, Magnesium, Boron, Silicon and Phosphorus

b)

Lithium, Magnesium, Boron, Mercury and Phosphorus

c)

Hydrogen, Magnesium, Boron, Silicon and Phosphorus

d)

None of the above

9.

The following are liquids at room temperature

a)

Bromine, Chlorine, Iodine and Mercury

b)

Bromine, Fluorine and Mercury

c)

Bromine, Iodine and Polonium

d)

Bromine and Mercury

10.

A non-metal liquid at room temperature is

a)

Mercury

b)

Caesium

c)

Gallium

d)

Bromine

11.

The following does not conduct electricity

a)

Carbon

b)

Magnesium

c)

Sulphur

d)

Zinc

12.

The element in Period 4 Group 11

a)

Copper

b)

Silver

c)

Sodium

d)

Zinc

13.

The non-metal in Group 1 is

a)

Lithium

b)

Beryllium

c)

Caesium

d)

Hydrogen

14.

The noble gas in Period 3

a)

Scandium

b)

Krypton

c)

Argon

d)

Neon

15.

The diatomic molecule in Group 16 is

a)

Sulphur

b)

Oxygen

c)

Chlorine

d)

Nitrogen

16.

The diatomic molecule in Period 3 is

a)

Sulphur

b)

Chlorine

c)

Oxygen

d)

Nitrogen

17.

How many electrons does Argon have?

a)

19

b)

58

c)

18

d)

22

18.

How many protons does Hydrogen have?

a)

1

b)

0

c)

2

d)

0.5

19.

What is the smallest part of an element?

a)

An atom

b)

A molecule

c)

A diatomic molecule

d)

None of the above

20.

In the electrolysis of copper (ll) chloride, what happens at the negative electrode?

a)

Copper is deposited

b)

Chlorine gas bubbles form

c)

Copper (II) chloride forms

d)

Nothing happens

21.

An example of a molecule is

a)

O2

b)

H2O

c)

N2

d)

All of the above

22.

The following is a metalloid in period 3

a)

Chlorine

b)

Phosphorus

c)

Aluminium

d)

Silicon

23.

What is the atomic number of the element in Period 3 Group 14?

a)

28

b)

14

c)

72.6

d)

32

24.

Boron is a...

a)

Metal

b)

metalloid

c)

non-metal

25.

The only non-metal that conducts electricity is

a)

Sulphur

b)

Carbon

c)

Bromine

d)

Iodine

26.

Aluminium has

a)

14 protons

b)

27 protons

c)

40 protons

d)

13 protons

27.

The following is NOT a property of a metal:

a)

Conductor of electricity

b)

Conductor of heat

c)

Brittle

d)

Malleable and ductile

28.

The following is NOT a property of a non-metal:

a)

Brittle

b)

Dull sound when tapped or dropped

c)

Weak conductor of electricity

d)

Malleable and ductile

29.

The following substance is:

a)

Element

b)

Compound

c)

Mixture of elements

d)

Mixture of compounds

e)

Mixture of elements and compounds

30.

The following substance is:

a)

Element

b)

Compound

c)

Mixture of elements

d)

Mixture of compounds

e)

Mixture of elements and compounds

31.

The following substance is a/an:

a)

Element

b)

Compound

c)

Mixture of elements

d)

Mixture of compounds

e)

Mixture of elements and compounds

32.

The following substance is:

a)

Element

b)

Compound

c)

Mixture of elements

d)

Mixture of compounds

e)

Mixture of elements and compounds

33.

The following is not a compound

a)

Water

b)

Carbon dioxide

c)

Copper (II) Chloride

d)

Iodine

34.

The following is true of a compound:

a)

exhibits properties of the elements that chemically combined to form it

b)

exhibits the properties of the element with the highest atomic number

c)

cannot be broken down into smaller parts

d)

is a new substance with new properties

35.

Name the halogen in Period 5

a)

Bromine

b)

Iodine

c)

Astatine

d)

Chlorine

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