Question

Look at the picture given below and answer the following question:

(a) Name the metals used in these objects or devices.

(b) What property of metals allows them to be used in these objects?

Answer 1

Metals-

• They are solid at room temperature. except for mercury.
• Lustrous- they have a shiny surface.
• Ductile- they can be drawn into wire.
• Malleable- they can be hammered or rolled into thin sheets.
• Sonorous- They produce sound when stuck with another hard substance.
• They are good conductors of heat and electricity.
• Example- Sodium, magnesium, calcium, copper, gold, etc.

(a) The metals used in these objects or devices are:

• Cycle- Iron
• Wire- copper
• Bell- bronze alloy (copper + zinc )
• Coin - Gold
• Utensils - Steel (iron + carbon)
• Foil - Aluminium

(b) The property of metals allows them to be used in these objects:

• Lustrous- they have a shiny surface.
• Ductile- they can be drawn into wire.
• Malleable- they can be hammered or rolled into thin sheets.