1. D. Crowley, 2007

2. Fuel To know what a fuel is, and why they are used Thursday, March 10, 2016

3. Fuel What is a fuel? What types of fuel do you know - how do they work / what makes them different?! Discuss with your partner anything you know about fuels… Fuels are substances that release energy when they burn Some fuels are better than others - e.g. one fuel may be easier to store, give off more heat and pollute less

4. Energy So what is energy? Energy is the ability to ‘do some work’ - everything that happens needs energy (e.g. heating; cooking; lighting; movement of vehicles; and keeping us alive)! A fuel is something that can release energy, making it useful for us to ‘do some work’ such as moving a car; running across a field; heating a room; sending a rocket into space… Energy can be in many different forms, such as light, heat, sound, electrical, kinetic (movement), nuclear etc…

5. Experiment How could we measure how much heat energy we were making using the different settings on a Bunsen burner? In your book write down a prediction and method to test how much energy different settings on the Bunsen burner release How could we measure how much heat energy we were making using the different settings on a Bunsen burner? Think about: - What are you going to change? What are you going to keep constant? What are you going to measure (and how)? What about repeats?

6. Energy Release Set up a Bunsen burner and heat-proof mat Then set up a clamp-stand to the side of the Bunsen with a clamp in it Measure out 10cm 3 of water, and carefully pour this into a boiling tube Place one of the boiling tubes in the clamp, and angle it so the bottom is above the Bunsen Time (in seconds) how long it takes for the water to boil (100 o C) using the safety flame of the Bunsen Record your results (in your book and on the computer), and repeat this using the full flame of the Bunsen If you have time, repeat both experiments

7. Energy Generally you should have found that the water boiled quicker using the full flame of the Bunsen burner - this is because it is releasing more energy However, some groups found it took different amounts of time to reach the boiling point of water (100 o C) This is why in scientific experiments we always repeat what we do - this gives us an average which increases the accuracy of our experiment