8.1 Alloy and its importance

What is the definition of an alloy?

• mixture of metal and non metal

• mixture of metal and non metal where the main element is non metal

• mixture of two or more elements where the main element is metal.

• pure metal are weak, soft and easily corroded

which one of the items is made of duralumin?

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• 
• 
• 

There are properties of alloy except..

• shiny

• resistant to corrosion

• hard

• dull

Below are composition of pewter except..

• tin

• iron

• antimony

• copper

which of the following is the use of steel?

• cutlery

• trophies

• railway tracks

• keys

There are the purposes of alloying except.

• improve appearance

• improve strength and hardness

• increase resistance to corrosion

• increase density

which of the following is the properties of pure metals?

• less hard

• hard

• shiny

• good appearance