| Front | Describe the stages of the core practical for measuring energy in foods |
|---|---|
| Back | 1. Use the measuring cylinder to put 20cm3 of water into a test tube. Clamp the test tube at an angle
2. Record the initial temperature of the water in the test tube
3. Take a small food sample and record its mass
4. Fix the food sample and record its mass
5. Set the food alight by holding it in the bunsen flame. As soon as it lights, move it so the tip of the slame touches the test tube. If the flame goes out, quickly relight it
6. When the food finally stops burning, drop sample into a discard beaker. Stir the water in the test tube with the thermometer and record the temperature
7. Empty the test tube and refill it with another 20cm3 of water. Repeat steps 2-6 using a different food each time. |
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