combustion reactions

Question 1

What is a combustion reaction?

Answer 1

A combustion reaction is a chemical reaction that typically occurs between a fuel and an oxidant, producing heat and light.

Question 2

True or False: Combustion reactions always produce carbon dioxide and water.

Answer 2

False: While complete combustion produces carbon dioxide and water, incomplete combustion can produce other products such as carbon monoxide.

Question 3

Fill in the blank: The general equation for a complete combustion reaction can be represented as _____ + O2 → CO2 + H2O.

Answer 3

Fuel

Question 4

Which of the following is a common fuel used in combustion reactions: A) Hydrogen B) Oxygen C) Nitrogen D) Helium?

Answer 4

A) Hydrogen

Question 5

What is the primary source of energy released during combustion?

Answer 5

The primary source of energy released during combustion is the breaking of chemical bonds in the reactants and the formation of new bonds in the products.

Question 6

What type of combustion occurs when there is a sufficient supply of oxygen?

Answer 6

Complete combustion.

Question 7

True or False: Combustion reactions are always exothermic.

Answer 7

True: Combustion reactions release energy in the form of heat.

Question 8

What are the products of incomplete combustion?

Answer 8

The products of incomplete combustion can include carbon monoxide, soot (carbon), and other hydrocarbons.

Question 9

Multiple choice: Which of the following is NOT a product of combustion? A) Carbon dioxide B) Water C) Nitrogen D) Carbon monoxide

Answer 9

C) Nitrogen

Question 10

Define ‘oxidant’ in the context of combustion reactions.

Answer 10

An oxidant is a substance that provides oxygen or another oxidizing agent to help fuel burn in a combustion reaction.