Transfer of energy in Heat – Class 10 Science Experiment

Chapter Name: Heat

Activity Name: Transfer of energy in Heat

Activity Description:

Transfer of energy in Heat - Class 10 Science Experiment

In this experiment, we will investigate the transfer of energy between water and coconut oil when they are brought into contact.

By observing the temperature changes in both substances, we can understand how heat energy flows from one material to another due to differences in their average kinetic energy.

Required Items:

  1. Water
  2. Container for heating water
  3. Coconut oil
  4. Cylindrical transparent glass jar
  5. Lid with two holes
  6. Two thermometers

Step by Step Procedure:

  1. Heat the water in a container until it reaches a temperature of 60°C.
  2. Take the cylindrical transparent glass jar and fill it halfway with the hot water.
  3. Very gently pour coconut oil over the surface of the water, being careful to prevent mixing.
  4. Place the lid with two holes on top of the glass jar.
  5. Insert one thermometer through each hole in the lid, ensuring that the bulb of one thermometer is immersed only in the water and the other thermometer is immersed only in the coconut oil.
  6. Observe and record the initial readings of both thermometers.

Experiment Observations:

After setting up the apparatus, the following observations will be made:

  1. The reading of the thermometer immersed in water decreases.
  2. The reading of the thermometer immersed in coconut oil increases.

Precautions:

  1. Take care to avoid mixing water and oil to ensure accurate results.
  2. Handle hot water with caution to prevent burns or injuries.
  3. Securely place the thermometers in the holes of the lid to get accurate temperature readings.

Lesson Learnt from Experiment:

Through this experiment, we learn that when water and coconut oil are in contact, heat energy is transferred between them. The average kinetic energy of the molecules in the coconut oil increases, leading to a rise in its temperature.

On the other hand, the average kinetic energy of the molecules in the water decreases, causing its temperature to decrease. Thus, heat energy flows from water to oil until equilibrium is reached.

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