Exercise 5.1 & 5.2 Metals and nonmetals [Must Do]

Metals are strong and tough.

This is why iron is used for ...........................

• hammer

• bridge

• electrical wiring

• jewellery

Metals are usually shiny.

This is why gold is used for ...........................

• hammer

• bridge

• electrical wiring

• jewellery

Metals are good conductors of electricity.

This s why copper is used for .........................

• hammer

• bridge

• electrical wiring

• jewellery

Drag and drop the words that describes a property of metals:

​ (a)   , ​ (b)   , ​ ​ (c)   , ​ (d)   , ​​ (e)   .

• feels cold to the touch
• conduct heat
• malleable
• has a shiny surface
• makes a ringing sound when tapped
• dull surface
• does not conduct electricity
• brittle

Answer explanation

Properties of metals:

*malleable

*makes ringing sound when tapped

*ductile

*feel cold to the touch

*conduct heat

*has a shiny surface

A material that can be drawn out into wires is ​ ​ ​ (a)  

• ductile
• malleable
• sonorous
• brittle

If you place a material that is an ​ (a)   into an electrical circuit, no electric current will pass through the circuit.

• electrical insulator
• thermal conductor
• electrical conductor

If a materials is ​ (a)   then you can hammer and press it into shape.

• malleable
• ductile
• brittle
• hard

A ​ (a)   material cannot be shaped, it snaps easily.

• brittle
• hard
• malleable
• ductile

Give two properties of copper that make it a suitable material for electrical wiring.

​ (a)   and ​ (b)  

• electrical conductor
• ductile
• shiny
• hard
• malleable

Copper can be used for cooking pots because it is a good ​ (a)  

• thermal conductor
• electrical conductor
• shiny
• ductile