Chemistry Reaction Drills

Question 1

Write what is the result when a metal oxide/ hydroxide reacts with a dilute acid? State one reason why theese products are formed.

Answer 1

They produce a salt + water.

Metal oxides and hydroxides are BASIC. Hence, they react with acids to NEUTRALISE (form a salt and water).

Question 2

Write the general word equation and actual balanced chemical equation for the reactions between magnesium hydrogencarbonate and copper carbonate with acids respectively.

Answer 2

metal carbonate/ hydrogen carbonate —> salt + carbon dioxide + water

Question 3

Write the balanced chemical equation for when iron reacts with steam, and write the general word equation.

Answer 3

(See pg. 156)

metal + steam —> metal oxide + hydrogen

Question 4

Write the balanced chemical equation and general word equation for when potassium reacts with oxygen.

Answer 4

(See pg. 155)

metal + oxygen —> metal oxide

Question 5

Write the balanced chemical equation and general word equation for when calcium and water react.

Answer 5

(See pg. 155)

metal + liquid water —> metal hydroxide + hydrogen

Question 6

Construct a table summarizing the reactions of metals with dilute acids, oxygen and water. Construct another table summarising the effect of heat on metal carbonates, hydroxides and nitrates.

Answer 6

(See pgs. 156 and 157)

Question 7

What are the equations for the formation of scum from a calcium salt, the formation of calcium hydrogencarbonate from limestone and rainwater with dissolved carbon dioxide, an the displacement of calcium ion in the ion-exchange column of a water softening devices? Write the name of each reactant and product below the formula in the equations. What is lime scale/ kettle fur.

Answer 7

[See pgs. 180-182].