Thursday, May 15, 2025

HS 1st year : Chemistry chapter 2 experiments

 Experiment Script 1: Identifying Subatomic Particles

Objective: To identify and understand the properties of subatomic particles - protons, neutrons, and electrons.

Materials Required: Model of an atom (3D model or chart), Positive and negative magnets, Balloons, and Sand.

Procedure:

  1. Display the model of an atom and explain that it consists of three main subatomic partic...

Experiment Script 2: Thomson’s Model of Atom

Objective: To understand and visualize Thomson’s model of the atom.

Materials Required: Plasticine (clay), Small beads or marbles, A small plastic or glass sphere.

Procedure:

  1. Take a small plastic or glass sphere and fill it with plasticine.

  2. Insert the beads or marbles representing electrons inside the plasticine, showing that electrons are embedded in a positive charge sphere.

  3. Explain the concept using the model.

Observation: The electrons are embedded like seeds in a watermelon.

Conclusion: Thomson’s model suggests that an atom is a positively charged sphere with negatively charged electrons embedded in it.

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