Question 1:
Explain with examples the meaning of solute, solvent and solution.
Answer:
Sugar dissolves in water forming sugar water.
Sugar is a solute, a substance that dissolves in a liquid.
Water is a solvent, a liquid that dissolves a solute.
Sugar water is a solution, a mixture of solute and solvent.
Explain with examples the meaning of solute, solvent and solution.
Answer:
Sugar dissolves in water forming sugar water.
Sugar is a solute, a substance that dissolves in a liquid.
Water is a solvent, a liquid that dissolves a solute.
Sugar water is a solution, a mixture of solute and solvent.
Question 2:
Explain one difference between solution and suspension.
Answer:
The particles of a solute in a solution are dispersed evenly throughout the solvent, but the particles of a solute in a suspension are dispersed unevenly.
(Any other answers are accepted)
Explain one difference between solution and suspension.
Answer:
The particles of a solute in a solution are dispersed evenly throughout the solvent, but the particles of a solute in a suspension are dispersed unevenly.
(Any other answers are accepted)
Question 3:
Name the substances at home that can remove rust, blood stains and ink stains.
Answer:
Rust – lime juice// vinegar
Blood – common salt solution
Ink – hair spray// vinegar
Name the substances at home that can remove rust, blood stains and ink stains.
Answer:
Rust – lime juice// vinegar
Blood – common salt solution
Ink – hair spray// vinegar
Question 4:
Why is hot water suitable for making coffee?
Answer:
Hot water increases the rate of solubility of coffee powder. The higher the temperature of water, the higher the rate of solubility of coffee powder.
Why is hot water suitable for making coffee?
Answer:
Hot water increases the rate of solubility of coffee powder. The higher the temperature of water, the higher the rate of solubility of coffee powder.