Junior Cycle Science Respiration: With the aid of a labelled diagr

Question

With the aid of a labelled diagram, describe an experiment to investigate the conversion of the chemical energy in food into heat energy.

#### Experiment Overview:
To investigate the conversion of the chemical energy in food into heat energy, we will conduct an experiment using a simple calorimetry setup.

### Equipment Required:
1. A container of water (e.g., a beaker)
2. Thermometer or temperature sensor
3. Food sample (e.g., dried pea or nut)
4. Ignition source (e.g., lighter or match)
5. Stand or holder to support the food above the water
6. Stopwatch (optional) to time the experiment

### Method:
1. **Setup the Apparatus:** Fill the container with a known volume of water and place the thermometer into the water to measure its initial temperature.
2. **Position the Food Sample:** Securely position the food sample above the container, ensuring it is not touching the water.
3. **Ignite the Food Sample:** Carefully light the food sample and allow it to burn completely. Ensure that the heat produced is directed towards the water.
4. **Monitor the Temperature Change:** Observe the water temperature change as the food burns. Record the highest temperature achieved.
5. **Calculate the Temperature Rise:** Determine the change in temperature by subtracting the initial temperature from the final temperature of the water.

#### Expected Result:
Upon burning the food sample, the temperature of the water will increase, demonstrating the conversion of chemical energy from the food into heat energy.

### Labelled Diagram:
(Provide a clear diagram with labels for the water container, thermometer, food sample, and ignition source.)

With the aid of a labelled diagram, describe an experiment to investigate the conversion of the chemical energy in food into heat energy - Junior Cycle Science - Question a - 2017

Worked Solution & Example Answer:With the aid of a labelled diagram, describe an experiment to investigate the conversion of the chemical energy in food into heat energy - Junior Cycle Science - Question a - 2017

Describe the equipment and setup

Explain the process of burning food

State the expected result

Join the Junior Cycle students using SimpleStudy...