Answer:
Question: What is needed for a combustion reaction to take place?
Answer: In order for a combustion to take place there are 3 main ingredients that must be present: Oxygen, Heat and Fuel.
Question: What is formed in any combustion reaction?
Answer: Combustion reactions always have two products: carbon dioxide and water. Combustion always produces water vapor.
Question: Mercury reacts with oxygen to form mercuric oxide. Is this a combustion reaction?
Answer: Yes, it is a combustion reaction.
Question: What are the products of any combustion reaction involving a hydrocarbon?
Answer: carbon dioxide and water are the products of any combustion reaction involving a hydrocarbon.