Question

Give reasons for the following

1 ,Aluminium foils are used to wrap food iterm.

2, Sodium and potassium are stored in kerosen.

Answer 1

1,Aluminium foils are used to wrap food items because aluminium being a soft malleable metal it can be beaten to in sheets to form thin wrapping sheets. Moreover it does not react with food items. Immersion rods are made of metallic substances metals are good conductors of heat and electricity

2,Sodium and potassium metals are kept in kerosene or in dry mineral oil. ... In summary, these metals are stored in kerosene because kerosene contains no water and protects these metals from being exposed to any moisture in the air that would cause these metals to react, potentially violently.