Types of Reactions

Question 1

Synthesis

Answer 1

When 2 or more reactants combine to form a single product. A + B = AB

Question 2

Single Replacement

Answer 2

When 1 element is substituted for another element in a compound. A + BC = B +AC

Question 3

Double Replacement

Answer 3

When the +ve and -ve ions of 2 ionic compounds exchange places to form 2 new compounds. AB + CD = AD + CB

Question 4

Combustion

Answer 4

When a fuel undergoes oxidation by reacting with an oxidising agent, resulting in the release of energy. Fuel + O2 = CO2 + H2O

Question 5

Decomposition/Analysis

Answer 5

When a compound breaks down into simpler substances. AB = A + B

Question 6

Neutralisation

Answer 6

Acid + Base = Salt +H2O. Involves the combination of H+ ions and OH- ions to generate H2O.

Question 7

Redox/Oxidisation

Answer 7

Involves the transfer of e- from one species to another. The loss of e- is oxidation and the gain of e- is reduction.

Question 8

Incomplete Combustion

Answer 8

Only partial burning of a fuel. May be due to a lack of oxygen or low temp, preventing the complete chemical reaction.