Give a reason why. (a) Copper metals used for making electric wires. (b) Graphite is used for making electrodes in a cell. (c) Immersion rods for heating liquids are made of metallic substances.

Answer

• Copper metal is used for making electric wires because it is highly ductile in It is a good conductor of electricity.

• Graphite is made of Its valence electrons are free to move. As a result, graphite is able to conduct electricity which makes it useful for making an electrode in a cell.

Immersion rods for heating liquids are made of metallic substances because metallic substances are good conductors of electricity and heat.