types of reactions

Question 1

combustion

Answer 1

burning/rapid combination of a substance with oxygen
- fuel + oxygen –> carbon dioxide + water

Question 2

synthesis

Answer 2

combining of reactants to make products
- sodium + chlorine –> sodium chloride

Question 3

oxidation

Answer 3

chemical reaction in which oxygen is added to a substance/hydrogen is removed from a substance (any reaction when a material loses electrons)
- magnesium + oxygen –> magnesium oxide
- 2Mg + O2 –> 2MgO

Question 4

corrosion

Answer 4

degradation of metal so that it loses its strength and becomes basically useless
- iron + water –> iron hydroxide + hydrogen

Question 5

precipitation

Answer 5

formation of a solid when two solutions are mixed
- lead (ll) nitrate + potassium iodide –> lead (ll) iodide + potassium nitrate

Question 6

acids on metals

Answer 6

acid + metal –> salt + hydrogen

Question 7

acids on carbonates

Answer 7

acid + carbonate –> salt + water + carbon dioxide

Question 8

neutralisation

Answer 8

reaction of an acid with a base to form a salt and water
acid + base –> salt + water

Question 9

decomposition

Answer 9

reaction where one substance breaks down into simpler substances
HEAT
- metal oxide –> metal + oxygen

Question 10

metal oxides/non-metal oxides

Answer 10

metal oxides + water –> BASE
non-metal oxides + water –> ACID