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4.8 Lesson 1 Alloy

Total questions: 18

Worksheet time: 9mins

Name
Class
Date
1.

Steel generally speaking is made of

a)

iron and carbon

b)

copper and iron

c)

tin and carbon

d)

aluminum and nickel

2.

Brass is an alloy made of

a)

copper and zinc

b)

copper and tin

c)

copper and nickel

d)

copper and aluminum

3.

Bronze is an alloy made of

a)

aluminum and magnesium

b)

copper and tin

c)

lead and tin

d)

copper and nickel

4.

Steel can become stainless when alloyed with _____.

a)

chromium and nickel

b)

copper and zinc

c)

tin and lead

d)

iron aand carbon

5.

Alloy is a ...

a)

A chemical compound with combination between metal and non-metal

b)

A salt contain of two or more elements where the main element is non-metal

c)

Mixture of two or more elements where the main element is metal

6.

Duralumin is used to

a)

Make body of aeroplane

b)

Make souvenirs

c)

Make medal

d)

Make cutlery

7.

Duralumin is used to make body of aeroplanes, electric cables and racing bicycle because...

a)

Low density

b)

Does not rust

c)

Stronger than aluminium

d)

Shiny

8.

This alloy is used to make medals, monuments , trophies. This alloy known as

a)

Duralumin

b)

Bronze

c)

Brass

d)

Steel

9.

Surgical instruments made up by

a)

Bronze

b)

Brass

c)

Stainless steel

d)

Pewter

10.

Atoms in pure metal are aranged in orderly manner.

a)

True

b)

False

11.

Pure metal is malleable because

a)

The atoms are arranged in orderly manner

b)

When knocked down the atoms easily slide over another

c)

The atoms fill up the empty spaces between the atoms

d)

The atoms form a thin wire

12.

Foreign atoms in alloy prevent...

a)

The atom layer from easily slide over another

b)

The atom layer break their bond easily

13.

Alloy has

a)

Shiny surface

b)

Hard structure

c)

Soft structure

d)

High resistant towards corrosion

14.

Pure metal is

a)

Easily corroded

b)

Hard

c)

Resist to corrosion

15.

This experiment is to compare .......between metal and its alloy

a)

Resistance towards corrosion

b)

Hardness

16.

Diagram shows the structure of

a)

Metal

b)

Alloy

c)

Glass

d)

Ceramic

17.

Foreign atom wil ..

a)

Disturbs the orderly manner of atoms arrangement in metal

b)

Prevent the atom layers from easily slide over another

c)

Increase forces of attraction between atom

18.

Our National Monument is made up by

a)

Pewter

b)

Concrete

c)

Bronze

d)

Brass