Observing the changes when burning some materials in Changes around Us – Class 7 Science Experiment

Chapter Name: Changes around Us

Activity Name: Observing the changes when burning some materials in Changes around Us

Activity Description:

Observing the changes when burning some materials in Changes around Us - Class 7 Science Experiment

In this experiment, we will burn three different materials: a piece of wood, a piece of paper, and a ball of cotton, and observe the changes that occur during the burning process.

Required Items:

  • Piece of wood
  • Piece of paper
  • Ball of cotton
  • Lighter or matches
  • Fire-safe surface or container

Step by Step Procedure:

  1. Set up a fire-safe surface or container to safely burn the materials.
  2. Take the first material, a piece of wood, and place it on the fire-safe surface.
  3. Ignite the wood using a lighter or matches and observe the changes that occur as it burns. Note down your observations in the table.
  4. Repeat the same process for the piece of paper, and again record your observations.
  5. Finally, repeat the process for the ball of cotton and note down the observations.

Experiment Observations:

Name of the materialChanges observed when burnt
Piece of woodWood burns and turns into ash.
Piece of paperPaper burns and turns into ashes and smoke.
Piece of cottonCotton burns and leaves behind ashes.

Precautions:

  1. Conduct the experiment in a well-ventilated area to avoid inhaling smoke or fumes.
  2. Use a fire-safe surface or container to prevent accidents and fires.
  3. Handle the burning materials with care and avoid touching them directly with your hands.
  4. Keep a fire extinguisher or water source nearby in case of emergencies.

Lesson Learnt from Experiment:

Through this experiment, we will learn about the changes that occur when different materials are burned. We can observe the physical and chemical changes that take place during the combustion process. It will help us understand the concepts of combustion, oxidation, and the properties of different materials when subjected to high heat.

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