Give reasons for the following. (a) Aluminium foils are used to wrap food items. (b) Immersion rods for heating liquids are made up of metallic substances. (c) Copper cannot displace zinc from its salt solution. (d) Sodium and potassium are stored in kerosene.
(a) Aluminium foils are used to wrap meals gadgets due to the fact aluminium metallic is malleable. Therefore, it could be crushed into skinny foils. (b) Metals are accurate conductors of warmth and electricity. Therefore, immersion rods for heating drinks are made from metallic substances. (c) A metallic can displace a much less reactive metallic from its salt in an aqueous solution. But zinc is greater reactive than copper. Therefore, copper can't displace zinc from its salt solution. Cu(s) ZnSO4 (aq) → No reaction (d) Sodium and potassium are saved in kerosene due to the fact they may be quite reactive elements. They can without difficulty seize hearthplace even when in touch with air.
