NIOS Class 10 Chapter 2 Activity 2.5 Matter in Our Surroundings

In this activity, we will prepare a suspension of wheat flour in water.

NIOS Class 10 Science and Technology Project File

This activity is based on the NIOS class 10 science and technology chapter 2, Matter in Our Surroundings.

Aim the activity

To prepare a suspension using wheat flour and water

Required Materials

  1. Wheat flour (200g)

  2. Water (250ml)

  3. Glass

  4. Spoon

Procedure

We fill a glass with approximately 250 mL of water and add one cup of wheat flour to it. Now we stir the mixture and leave it undisturbed for a few minutes, and carefully observe.

Observation

We can see wheat flour particles in water, suspended, making it cloudy. After some time, these particles settle down at the bottom of the glass and the water becomes clearer.

 Explanation

We prepared a suspension which a heterogeneous mixture. A suspension is formed when solid particles do not dissolve in liquid but are dispersed throughout the liquid and settle down after some time.

Conclusion

We can conclude that –

   1.  Wheat flour does not dissolve in water.

   2. Wheat flour particles are dispersed all over the liquid(water). This mixture is a suspension.

Frequently Asked Questions

1. Why do the wheat flour particles settle down at the bottom of the glass?

Answer – Wheat flour particles are heavier than water, and due to gravity, they settle down.

2.  Can the suspension be turned into a solution?

Answer – No, suspension cannot be turned into a solution.

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