General reaction types

Question 1

Combustion (burning) reactions of elements

Answer 1

Element + Oxygen –> Elemental oxide

Question 2

Combustion of hydrocarbons

Answer 2

Hydrocarbon + Oxygen –> Carbon dioxide + water

Question 3

Heating metal carbonates

Answer 3

Metal hydrogen carbonate –> metal carbonate + CO₂

Question 4

Heating metal hyrogen carbonates (bicarbonates)

Answer 4

Metal hydrogen carbonate –> Metal carbonate + water +CO₂

Question 5

Neutralisation reactions (acid/base)

Answer 5

Acid + hydroxide –> salt + water

Question 6

Acid & metal

Answer 6

Acid + metal –> salt + hydrogen

Question 7

Reactive Metal (K, Na, Ca and Li) & water

Answer 7

Reactive metal + water –> Metal hydroxide + hydrogen

Question 8

Acid & metal carbonate reactions

Answer 8

Acid + metal carbonate –> salt + water + carbon dioxide

Question 9

Acid & metal hydrogen carbonate (bicarbonate)

Answer 9

Acid + metal carbonate -> salt + water + carbon dioxide

Question 10

Acid & metal oxide

Answer 10

Acid + metal oxide –> salt + water

Question 11

Acid and metal sulpihde

Answer 11

Acid + metal sulphide –> salt + hydrogen sulphide gas (H₂S (g))

Question 12

Metal replacement reactions (single replacement reactions)

Answer 12

A + BC –> B + AC

Where A and B are metals and C is an anion. Metal A is more reactive than Metal B

Question 13

Precipitation reactions (Double replacement reactions)

Answer 13

Solutions of soluble ionic salts are mixed and an insoluble precipitate is prduced

E.g: AgNO3 (aq) + NaCl (aq) –> AgCl (s) +NaNO₃ (aq)