Comparing fuels
I can carry out a fair test to compare the energy transferred by burning different fuels.
Comparing fuels
I can carry out a fair test to compare the energy transferred by burning different fuels.
These resources will be removed by end of Summer Term 2025.
Lesson details
Key learning points
- Burning a fuel transfers energy by heating its surroundings.
- Heating water in a boiling tube allows the amounts of energy transferred by different fuels to be compared.
- The mass of fuel used needs to be the same for each measurement.
- The temperature and volume of water being heated needs to be the same for each measurement.
Keywords
Combustion - In a combustion reaction, fuel is burned and reacts with oxygen to release energy.
Fair test - In a fair test, variables are controlled so that only one change affects the dependent variable.
Control variables - Control variables are all variables, other than the independent and dependent variables, that are kept constant/the same in an investigation.
Fuel - A fuel is a substance that releases its stored energy when it undergoes combustion.
Common misconception
Pupils get easily confused between variables and how to ensure a fair test.
Ensure that pupils understand the independent variable is the type of fuel, the dependent variable is the temperature increase and control variables are mass of fuel and volume of water.
To help you plan your year 8 science lesson on: Comparing fuels, download all teaching resources for free and adapt to suit your pupils' needs...
To help you plan your year 8 science lesson on: Comparing fuels, download all teaching resources for free and adapt to suit your pupils' needs.
The starter quiz will activate and check your pupils' prior knowledge, with versions available both with and without answers in PDF format.
We use learning cycles to break down learning into key concepts or ideas linked to the learning outcome. Each learning cycle features explanations with checks for understanding and practice tasks with feedback. All of this is found in our slide decks, ready for you to download and edit. The practice tasks are also available as printable worksheets and some lessons have additional materials with extra material you might need for teaching the lesson.
The assessment exit quiz will test your pupils' understanding of the key learning points.
Our video is a tool for planning, showing how other teachers might teach the lesson, offering helpful tips, modelled explanations and inspiration for your own delivery in the classroom. Plus, you can set it as homework or revision for pupils and keep their learning on track by sharing an online pupil version of this lesson.
Explore more key stage 3 science lessons from the Fuels and energetics unit, dive into the full secondary science curriculum, or learn more about lesson planning.
Equipment
balance, clamp & stand, thermometer, metal bottle caps, Bunsen burner, four different fuels (e.g. wood, paper, fire, lighter, wax), measuring cylinder, heat-resistant mat
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
Starter quiz
6 Questions
mass of magnesium used (g)
volume of gas produced (cm³)
volume of acid used (cm³)