Chemical reactions: combustion
I can describe the processes of combustion and burning, and name the products of these reactions.
Chemical reactions: combustion
I can describe the processes of combustion and burning, and name the products of these reactions.
Lesson details
Key learning points
- Combustion requires fuel, oxygen, and an initial source of energy, usually heat, to start the reaction.
- The term 'burning' describes the reaction of substances with oxygen and is commonly used to refer to visible flames.
- Water is often formed in chemical reactions if oxygen and hydrogen atoms are present.
- Carbon dioxide is often formed in chemical reactions if oxygen and carbon atoms are present.
- Carbon dioxide and water both consist of small molecules that form easily with strong bonds.
Common misconception
Pupils struggle to understand that products of water and carbon dioxide are made when combustion takes place as they cannot see them.
Remind pupils about the rule of rearranging atoms from reactants to form products. Use a molecular modelling kit to show the combustion of methane. Remember to balance the reaction so that conservation of mass occurs.
Keywords
Combustion - Fuel reacts with oxygen to release energy and requires fuel, oxygen and heat to start the reaction.
Burning - Is a type of combustion where substances react with oxygen and produce visible flames.
Molecule - Made up of two or more atoms chemically bonded together. These are usually non-metal atoms.
Fuel - A substance that releases its stored energy when it undergoes combustion.
Oxidation - A type of reaction in which oxygen bonds to elements of the reactants.
Equipment
Beakers of differing sizes, heat resistant mat, candles, Bunsen burner, splints, adhesive putty to seal the spouts of the beakers.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
Loading...
Starter quiz
6 Questions
Particles are closely packed and have the least energy.
Particles are loosely packed and can flow but remain close.
Particles move rapidly and are widely spaced.
iron oxide
magnesium oxide
copper oxide
phosphorous pentoxide
carbon dioxide
sulfur dioxide