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Patterns of reactivity

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Name the metal which reacts with oxygen to form a dull black compound?

a)

Iron

b)

Aluminium

c)

Copper

d)

Magnesium

2.

Complete the equation below.

Iron + Oxygen gas →

a)

Iron oxygen

b)

Iron oxide

c)

Iron oside

d)

Ion oxide

3.

Write the products formed when sodium reacts with water?

a)

sodium oxide and hydrogen

b)

sodium hydroxide and hydrogen

c)

sodium hydroxide and oxygen

d)

sodium hydroxide and carbon dioxide

4.

Which gas is always produced when a metal reacts with water?

a)

Oxygen

b)

Carbon Dioxide

c)

Hydrogen

d)

Carbon Monoxide

5.

Aluminium is more reactive than ....

a)

Calcium and Zinc

b)

Sodium and Gold

c)

Magnesium and Copper

d)

Lead and Iron

6.

Which gas turns lime water milky?

a)

Nitrogen

b)

Hydrogen

c)

Carbon Dioxide

d)

Oxygen

7.

What is the formula and color of the compound formed when Magnesium react with oxygen

a)

MgCl2, White

b)

CaCO3, Blue

c)

MgO, White

d)

MgO2, White

8.

Nitric acid (HNO3) is a

a)

Reducing agent

b)

Oxidizing agent

c)

Redox agent

d)

None of these

9.

Which of the following is more reactive?

a)

Calcium

b)

Magnesium

c)

Zinc

d)

Alumunium

10.

Water becomes cloudy after commencement of reaction between Calcium and water because of the formation of

a)

Calcium Chloride

b)

Calcium Carbonate

c)

Calcium Oxide

d)

Calcium Hydroxide