Answer:
1. Hydrogen and Oxygen.
Consider the example of water forming from hydrogen and oxygen. Both hydrogen and oxygen gases exist as diatomic (“two-atom”) molecules. These molecules are the reactants in the reaction.
2. Combustion (im not sure about the product sorry, u can look it up on your book)
3. Carbon dioxide and water, the products are glucose and oxygen
4. Glucose and oxygen
Products are water and CO 2
Explanation:
i hope it helps
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