Chemistry Chapter 8

1.What is alloy?

Aloy is a substance formed a mixture of ____ or more elements in which the main element is a metal

• two

• • three

• Four

• One

2.Alloy is resistant to corrosion

• True

• Flase

Alloy has dull surface

• • True 

• • False

4.Brass is an alloy of which two metals?

• Copper and zinc

• • Copper and Iron

• • Iron and Nickel

• • Aluminium and copper

5.what is the use of steel

• •  racing bicycles

• • railways

• • medals

• • musical instruments

6.what are the composition of bronze 

• • copper

  •  

• • iron 

• • tin

• • zinc

7.Made up with atom in same size and arranged in an orderly arrangement.

This is the atom arrangement of ....

• • alloy 

  •  

• • pure metal

8.•stronger than pure copper

   •resistant to corrosion

   •shiny

Which of the following has properties above?

• • duralium

• • steel

• pewter

• brass

State the difference between alloy and its pure metal

Answer explanation

Give your opinion about the importance of alloys in modern engineering and technology

Answer explanation

Suggest answer:Alloys are crucial in engineering and technology due to their enhanced properties compared to pure metals. For instance, steel (an iron-carbon alloy) is widely used in construction due to its strength and durability. Aluminum alloys are important in aerospace applications because of their lightweight and strength. Titanium alloys are used in medical implants and aerospace components due to their corrosion resistance and strength-to- weight ratio.