1. Synthesis Word equation Hydrogen plus oxygen yields dihydrogen monoxide Unbalanced formula equation and model Balanced formula equation and model

2. Decomposition Word equation Water yields hydrogen plus oxygen Unbalanced formula equation and model Balanced formula equation and model

3. Combustion – burning of methane Word equation Methane plus oxygen yields carbon dioxide plus water Unbalanced formula equation and model Balanced formula equation and model

4. Combustion – burning of ethane Word equation Ethane plus oxygen yields carbon dioxide plus water Unbalanced formula equation and model Balanced formula equation and model

5. Combuston – burning of propane Word equation Propane plus oxygen yields carbon dioxide plus water Unbalanced formula equation and model Balanced formula equation and model

6. The opposite of Combustion Photosynthesis Word equation carbon dioxide plus water yields sugar(carbohydrate) plus oxygen Unbalanced formula equation Balanced formula equation