Aim: How much energy there is in food.
Hypothesis: If I work out how much the water temperature has risen by burning food underneath water, the mass of the water and the mass of food I can work out how much energy was in the food.
Introduction: This experiment is about how much energy there is in food. There are a few different types of energy, the one we are looking at is chemical energy. Some other types of energy are: thermal energy which is heat, magnetic energy which is the energy that makes magnets stick to each other or push away from each other, electric energy which makes stuff like T. V’s, phones and computers work, sound energy which lets us hear and light/radiant energy which makes plants grow and lights up …show more content…
Method: 1. Use the measuring cylinder to measure 10cm3 of water and then pour the water into the test tube.
2. Clamp the test tube with the water in it to the retort stand.
3. Measure the water temperature with the thermometer and record the temperature in the results table.
4. Get a piece of food and measure it with the weight measurer and record the weight in the results table.
5. Place the Bunsen burner on a heatproof mat, turn the collar of the Bunsen burner so the air hole is closed and then light the Bunsen burner with the matches (don’t put the Bunsen burner next to the retort stand otherwise the water will heat up from the Bunsen burner which would mess up your results).
6. Pick up the food you measured with the tongs, turn the flame on to the blue flame and hold the piece of food in the flame until it catches alight.
7. As soon as the piece of food catches alight put the piece of food under the test tube with the water underneath it. Try to get as much heat as possible to go into the water by keeping the flame on the piece of food right underneath