Question

Give reasons: a. Aluminium foils are used to wrap food items. b. Sodium and potassium are stored in kerosene. PLEASEEEE ANSWERRRR

Answer 1

Answer:

a) aluminium foils r made of aluminium and aluminium can conduct heat and will keep hot food hot for a while when stored in the foil.

b) sodium and potassium will combust on contact with oxygen and moisture.

thus they are stored in kerosene.

Answer 2

Explanation:

a) Aluminium reacts with air (oxygen) to form a layer of unreactive aluminium oxide. This layer infact protects the food items form being reacted.

b) Sodium and potassium are very reactive metals. They can react with air or water. So to prevent accidental fires, they are kept under kerosene