NCERT Solutions for Class 9 Science Chapter 2
Is Matter Around Us Pure
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-28
Questions No-2
Write the steps you would use for making tea. Use the words solution, solvent, solute, dissolve, soluble, insoluble, filtrate and residue.
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Take the solvent, water, in a kettle. Heat it. When the solvent boils, add the solute, milk. Milk and water forms a solution. Then pour some tea leaves over a sieve. Pour slowly hot solution of milk over tea leaves. Colour of tea leaves goes into solution as filtrate. The remaining tea leaves being insoluble remains as residue. Add requisite sugar which dissolves and the tea is ready.
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1. Take a cup of water in a container as solvent and heat it.
2. Add sugar in it which is solute. Heat it till all sugar dissolves.
3. You get a solution of water and sugar.
4. Sugar is soluble in water completely.
5. Add half a tea-spoon of tea-leaves, it is insoluble in water.
6. Boil the content, add milk which is also soluble in water, boil again.
7. Filter the tea with the help of strainer, the tea collected in cup is filtrate and the tea leaves collected on the strainer is residue.
Making tea involves a step-by-step process that demonstrates various concepts related to solutions:
1. Start by heating water until it reaches the boiling point, serving as the solvent.
2. Add tea leaves to the boiling water. These leaves contain soluble compounds that dissolve in the water.
3. Gently stir the mixture to aid in the dissolution of soluble components from the tea leaves into the water, creating a solution.
4. Let the tea steep in the hot water, allowing time for the flavors and compounds to dissolve further.
5. Pour the brewed tea through a filter or strainer to separate the insoluble tea leaves (residue) from the tea liquid (filtrate). The filtrate constitutes the dissolved tea compounds in the water, forming the prepared tea solution.
6. The resulting filtrate is the well-prepared tea solution, ready to be served and enjoyed.
In this process, water serves as the solvent, while tea leaves act as the solute. Filtration separates the insoluble residue (tea leaves) from the soluble components in the water, resulting in the tea solution available for consumption.