| A | B |
| Mercury II oxide changes to mercury and oxygen | decomposition |
| Putting sugar in water | dissolving |
| Plants take carbon dioxide and water to make sugar | synthesis |
| Heating water makes it evaporate | NO REACTION |
| zinc metal reacts with hydrochloric acid | single replacement |
| iron placed in CuCl2 solution | single replacement |
| silver nitrate + sodium chloride | double replacement |
| Sodium sulfate + barium chloride | double replacement |
| Nitrogen gas reacts with hydrogen gas to make ammonia (NH3) | synthesis |
| sodium chloride + magnesium nitrate | NO REACTION |
| Electricity is used to change water into hydrogen and oxygen | decomposition |
| Methane (CH4) burns in air | combustion |
| potassium nitrate + sodium chloride | NO REACTION |
| silver metal dipped into sodium chloride solution | NO REACTION |
| Potassium sulfide + lead nitrate | double replacement |
| Zinc metal dipped into copper II sulfate solution | single replacement |
| Butane (C4H10) + oxygen gas produces carbon dioxide and water | combustion |
| sugar is changed to solid carbon and water vapor | decomposition |
| Vinegar and baking soda combine to form bubbles and water | double replacement |
| when a compound combines with oxygen to produce water, carbon dioxide and energy | combustion |
| when a compound forms two or more elements or compounds | decomposition |
| when two compound react and two different compounds are formed | double replacement |
| Silver + Copper nitrate | NO REACTION |
| Copper + silver nitrate | single replacement |