Boiling of water in Heat – Class 10 Science Experiment

Chapter Name: Heat

Activity Name: Boiling of water in Heat

Activity Description:

This experiment aims to observe and understand the process of boiling water and the changes in temperature during the process. Students will use a beaker of water placed on a burner and monitor the temperature using a thermometer at regular intervals.

Required Items:

1. Beaker of water
2. Burner
3. Thermometer

Step by Step Procedure:

1. Take a beaker and fill it with water.
2. Place the beaker on the burner.
3. Start heating the water on the burner.
4. Keep a thermometer ready to measure the temperature of the water.
5. Note the initial temperature of the water.
6. Observe and note down the temperature reading of the thermometer every 2 minutes.
7. Continue heating and monitoring the temperature until significant observations are made.

Experiment Observations:

1. Initially, the temperature of the water will be at room temperature.
2. As the heating begins, the temperature of the water will start rising.
3. The temperature will continue to rise continuously until it reaches 100°C.
4. Once the water reaches 100°C, the temperature stops rising despite the continued supply of heat.
5. At 100°C, the water starts to boil, and a lot of bubbling is observed at the surface of the water.

Precautions:

1. Handle the burner carefully to avoid accidents.
2. Use a suitable protective covering or gloves while handling hot objects.
3. Keep a safe distance from the heated beaker to prevent burns.
4. Do not touch the beaker directly while it is being heated.

Lesson Learnt from Experiment:

Through this experiment, students will learn that the temperature of water rises continuously when heated until it reaches its boiling point. Beyond the boiling point (100°C for water), the temperature remains constant despite the continued supply of heat. The experiment demonstrates the process of boiling and the importance of the boiling point for a substance.