Chemical Changes 101 Quiz (LS)

when living things die and are broken down

• photosynthesis

• respiration

• decomposition

• thermal decomposition

when an acid is added to an alkali

• neutralisation

• decomposition

• acid rain

• electrolysis

when food is broken down in the body

• decomposition

• respiration

• absorption

• digestion

oxidation of metals (example iron to iron oxide)

• rusting
• air pollution
• incomplete combustion
• respiration

when air pollutants like sulphur dioxide combine with water vapour in the air

• air pollution

• acid rain

• neutralisation

• water pollution

introduction of harmful and poisonous substances into the air

• neutralisation

• air pollution

• rusting

• combustion

a process in living organisms involving the production of energy with the intake of oxygen and the release of carbon dioxide

• combustion

• decomposition

• respiration

• exasperation

burning of compounds with oxygen

• incomplete combustion
• rusting
• decomposition
• combustion

production of oxygen by green plants using sunlight , carbon dioxide and water

• photosynthesis
• acid rain
• rusting
• thermal decomposition

burning of sugar using fire (heat)

• neutralisation

• thermal decomposition

• electrolysis

• respiration