Short Questions
1. What is the difference between saturated and unsaturated solution?
Ans:The difference between saturated and unsaturated solution is that unsaturated solution can dissolve more solute while saturated solution count dissolve more solute.
2. Bilqees was preparing her morning coffee. She adds hot water and sugar to her coffee which fully dissolves and makes it sweeter to taste. Is her cup of coffee considered a solution and why?
Ans: Yes, it is a solution because it has both solute and solvent.
* In the above scenario which one is the solute and which one is the solvent?
Ans: Sugar is solute and water is solvent in this solution.
3. How increase in temperature speed up the dissolving process?
Ans: Increase in temperature increases the solubility because bonds are broken easily.
4. What happens when solution becomes supersaturated?
Ans: When solution becomes supersaturated no more solute can be dissolved at any temperature.
5. In gases, solubility increases with increase in pressure. Give a daily life example.
Ans: Its example is carbonated drink like Pepsi in which CO2 is dissolved at higher pressure.
6. How do nature of solutes have an effect on the solubility.
Ans: The solubility of solutes follow the rule of "like dissolves like"
7. Khushi added some olive oil to a cup of water. Why a layer of oil formed at the surface of water?
Ans: A layer of oil is formed on the surface of water because oil is immiscible with water.
8. How increase in temperature effects the solubility of gases?
Ans: Increase in temperature lowers the solubility of gases because it of gas. increase the volume of gas.
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