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CHEMISTRY ONLINE TEST 1: PERIODIC TABLE OF ELEMENT

Total questions: 40

Worksheet time: 48mins

Name
Class
Date
1.

1.How are the elements arranged in the Periodic Table?

a)

By increasing in proton number

b)

By increasing in atomic mass

c)

By increasing in nucleon number

d)

By increasing in number of neutron

2.

2. State the sub-atomic particles.

a)

Proton

b)

Neutron

c)

Electrons

d)

Shells

3.

3. Why is an atom neutral?

4 lines
4.

4. Define compound

4 lines
5.

5. Explain briefly the difference between atom and molecule?

4 lines
6.

6. You are given element X. What should you do to identify the element?

4 lines
7.

7. When a substance undergoes chemical changes, what will probably happened?

a)

Smells or aroma can be detected

b)

Colour changes

c)

Change in shapes

d)

Formation of gas

8.

8. Which of this is physical changes?

a)

Iron become rusting.

b)

Frying an egg

c)

Burning of paper

d)

Marble that had been crushed

9.

9. When iron filings is heated with sulphur powder, a black of iron sulphide is formed. When magnet is brought near to the iron sulphide, the iron filings cannot be separated. Based on the observation, the formation of iron sulphide was physical changes or chemical changes?

a)

Physical changes

b)

Chemical changes

10.

10.Explain why chemical changes happened?

4 lines
11.

11.Ah Leong is a manager of one pump station in Pahang. Last week there was a flesh flood occur that causes water entering the saving petrol tank. Suggest how could you help Ah Leong to separate between water and petrol.

4 lines
12.

12.Sodium is in Group 1 of the Periodic Table. Write down the chemical symbol for sodium.

4 lines
13.

 carbon + oxygen  .............. + heatcarbon\ +\ oxygen\ \rightarrow\ (a)   \ +\ heat 
13. Complete the word equation above:

14.

 .................+ .................. Sodium chloride (salt).................+\ ..................\rightarrow\ Sodium\ chloride\ \left(salt\right)  
14. Complete the word equation above:

(a)  

15.

15.M (a)   is the only metal that is a liquid at room temperature.

16.

16.G (a)   is the only non-metal that is a good conductor of electricity.

17.

17.The diagram shows a model of an atom of an element.

Name the part of the atom labelled X.

4 lines
18.

18.Describe how can you tell that the element is in Group 4 of the Periodic Table. Use information from the diagram.

4 lines
19.

19.The diagram shows the structure of copper chloride. Describe how can you tell from the diagram that copper chloride is a compound.

4 lines
20.

20.Chlorine is a non-metal. Tick (/) the correct sentences.

a)

Chlorine is a solid at room temperature because it has high melting point.

b)

Chlorine conducts electricity because its molecules are close together.

c)

Chlorine is a gas at room temperature because it has low boiling point.

d)

Chlorine conducts heat because its molecule are far apart.

21.

21.Which diagram shows one element made of single atoms?

a)
b)
c)
d)
e)
22.

22.Which diagram shows one compound made of molecules?

a)
b)
c)
d)
e)
23.

23.Which diagram shows a mixture of an element and a compound?

a)
b)
c)
d)
e)
24.

24.Copper is a metal. Tick (/) the boxes next to the two properties of copper

a)

Copper conducts electricity.

b)

Copper does not conduct heat.

c)

Copper has a low boiling point.

d)

Copper is ductile.

e)

Copper is not malleable.

25.

The number of valence electrons an element has is equal to its:

a)

Period number

b)

Group number

c)

Valence number

d)

Atomic number

26.

The vertical columns on the periodic table that have common properties are called

a)

Groups

b)

Periods

c)

Shells

d)

Valences

27.

Hydrogen is a:

a)

Alkali metal

b)

Metalloid

c)

Non-metal

d)

Noble gas

28.

What are the elements found along the "staircase" called? They have properties of both metals and non-metals.

a)

Metalloids

b)

Non-metals

c)

Transition metals

d)

Metals

29.

What are the elements in groups 3-12 of the periodic table called?

a)

Transition metals

b)

Non-metals

c)

Metalloids

d)

Metals

30.

What are the elements in group 17 of the periodic table called?

a)

Alkali metals

b)

Alkaline earth metals

c)

Halogens

d)

Noble gases

31.

What are the elements in group 18 (the far right) of the periodic table called?

a)

Alkali metals

b)

Alkaline earth metals

c)

Halogens

d)

Noble gases

32.

What are the elements in group 2 of the periodic table called?

a)

Alkali metals

b)

Alkaline earth metals

c)

Halogens

d)

Noble gases

33.

What are the elements in group 1 (the far left) of the periodic table called?

a)

Alkali metals

b)

Alkaline earth metals

c)

Halogens

d)

Noble gases

34.

Which of these is not a sign of chemical change?

a)

Bubbles

b)

Color change

c)

Melting

d)

Bad smell

35.

How many neutrons does Carbon have?

a)

6

b)

8

c)

12

d)

18

36.

A pure substance that cannot be broken down into another kind of matter through physical or chemical means.

a)

element

b)

compound

c)

period

d)

group

37.
How many electrons do atoms need to be stable?
a)
1
b)
2
c)
6
d)
8
38.
What is the chemical symbol for Aluminum?
a)
A
b)
Al
c)
Au
39.

Which properties most accurately describe the element Krypton (Kr)?

a)

Highly reactive

b)

Ductile

c)

Weak conductor of electricity

d)

Has 8 valence electrons

e)

Brittle and dull

40.

Identify the unknown atom.

a)

Flourine

b)

Beryllium

c)

Boron

d)

Helium