Is full cream pure? in Is Matter Pure – Class 9 Science Experiment

Chapter Name: Is Matter Pure

Activity Name: Is full cream pure? in Is Matter Pure

Activity Description:

Is full cream pure? in Is Matter Pure - Class 9 Science Experiment

In this experiment, we will investigate whether full cream milk is a pure substance or a mixture.

By using a milk churner to spin the milk, we will observe the separation of a paste-like solid known as cream. Based on this observation, we will determine if the cream is a pure substance or a mixture.

Required Items:

  1. Milk
  2. Milk churner
  3. Vessel

Step by Step Procedure:

  1. Take some milk in a vessel.
  2. Use the milk churner to spin the milk for some time (refer to figure 1).
  3. Observe the changes in the milk after spinning.
  4. Note the separation of a paste-like solid (cream) from the milk.

Experiment Observations:

After spinning the milk, a paste-like solid (cream) separates from the milk.

Precautions:

  • Ensure that the milk churner and vessel are clean and free from any contaminants.
  • Handle the milk churner and vessel carefully to avoid spillage.
  • Conduct the experiment in a controlled environment to avoid external factors influencing the results.

Lesson Learnt from Experiment:

The observation of cream separating from the milk indicates that full cream milk is a mixture and not a pure substance. Cream is composed of more than one component, making it a mixture. This experiment highlights the concept of mixtures and their presence in everyday substances.

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