E. Short Answer Questions:
1. Why is water called a universal solvent?
2. Define solubility. How can it be increased?
3. Soni is helping her mother and accidentally she mixes the arhar dal with gram seeds and rice flour.
Her brother helps her in separating the things from each other.
(a) Which method they would have used to separate things?
(b) What value do you learn from Soni's brother?
4. Differentiate between filtrate and residue.
5. Can a liquid dissolve any amount of a given substance at a particular temperature? Explain.
6. Define the terms (a) decantation (b) filtration.
Answers
Answer:
1. Water is called the "universal solvent" because it dissolves more substances than any other liquid. ... This allows the water molecule to become attracted to many other different types of molecules.
2. For many solids dissolved in liquid water, the solubility increases with temperature. The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
3. (a) Hand picking
4. The difference between residue and filtrate
he difference between residue and filtrateis that residue is whatever remains after something else has been removed while filtrate is the liquid or solution that has passed through a filter, and which has been separated from the filtride.
5. No liquids cannot dissolve any amount of given substance at a particular temp. When the solution attains equilibrium the amount of substance produced and the amount of reactants is equal due to which further process is stopped.
6.Decantation is pouring out of upper clear layer of liquid into another container to separate two immiscible liquids. Like draining oil from a mixture of oil and water after allowing the two to separate and form distinct layers. Filtration is the process of separating insoluble impurities from a solution.
PLZ MARK AS BRAINLIEST !!