Metal oxides are basic in nature in Acids, Bases and Salts – Class 10 Science Experiment

Chapter Name: Acids, Bases and Salts

Activity Name: Metal oxides are basic in nature in Acids, Bases and Salts

Activity Description:

Metal oxides are basic in nature in Acids, Bases and Salts - Class 10 Science Experiment

In this experiment, we will investigate the basic nature of metal oxides by reacting copper oxide (a metal oxide) with dilute hydrochloric acid. The reaction will result in the formation of copper (II) chloride, which will cause a noticeable change in the solution’s color. This reaction is analogous to the reaction observed in Activity 5, where a base reacted with an acid to form salt and water.

Required Items:

  1. Copper oxide
  2. Dilute hydrochloric acid
  3. Beaker
  4. Stirring rod

Step by Step Procedure:

  1. Take a small amount of copper oxide and place it in a beaker.
  2. Slowly add dilute hydrochloric acid to the beaker while gently stirring the mixture.
  3. Observe the changes in the solution, including any color changes.
  4. Note the color of the solution after the reaction.

Experiment Observations:

  • The copper oxide dissolves in the dilute hydrochloric acid.
  • The solution’s color changes to blueish-green.
  • Formation of copper (II) chloride occurs during the reaction.


  1. Handle the hydrochloric acid with care, as it is corrosive. Wear appropriate safety equipment, such as gloves and goggles.
  2. Conduct the experiment in a well-ventilated area to avoid inhaling any fumes.
  3. Use a small amount of copper oxide and hydrochloric acid to prevent excessive reaction.

Lesson Learnt from Experiment:

Through this experiment, we have observed that metal oxides, such as copper oxide, exhibit basic properties when they react with acids. The resulting reaction yields a salt and water, similar to the reaction observed with metal hydroxides in Activity 5. This indicates that metal oxides possess basic characteristics, similar to metal hydroxides.

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