What is the action of water on (a) sodium (b) magnesium, and (c) aluminium? Write equations of the chemical reaction involved.

What is the action of (a) Sodium on arsenic (b) Magnesium on bismuth

What is the role of leaching in the extraction of aluminium ? Write all the chemical reactions involved in it.

What happens when Sodium is placed in water? Write word equations of the reactions involved.

(a). What is the common name of sodium hydrogencarbonate? ltBrgt (b). What happens when a solution of sodium hydrogencarbonate is heated? Write equation of the reaction involved. (c) Explain why, sodium hydrogencarbonate is used as an antacid.

Write the formulae of sodium chloride and sodium carbonate. Explain why an aqueous solution of sodium chloride is neutral but an aqueous solutio of sodium carbonate is basic (or alkaline). Write chemical equations of the reactions involved.

Explain reaction of sodium, magnesium and iron with water.

(a). What happens when calcium reacts with chlorine? Write an equation for the reaction which takes place. (b). What happens when magnesium reacts with very dilute nitric acid? Write an equation for the reaction involved.

Write equation for the reaction of (a). Sodium with oxygen (b) magnesium with oxygen