Question

Q2. a) Compare compounds and mixtures. Give examples for each.
b) State the properties of colloid.
c) Write about any two factors affecting the rate of evaporation.​

Answer 1

Answer:

(a)Mixtures do not have melting or boiling points, but compounds have fixed melting and boiling points. Examples of mixtures are Alloys like brass, bismuth, chromium, oceanic water (salt and water), mixtures of gases, etc., while Sodium Chloride, Baking soda, Methane, Salt, etc., are examples of the compounds.

(b)Stability: Colloids are relatively stable in nature. The particles of the dispersed phase are in a state of continuous motion and remain suspended in the solution.

Filterability: Colloids require specialized filters known as ultrafilters for filtration.

(c)Temperature and rate of evaporation are proportional to each other. Surface area: As the surface area increases, the rate of evaporation increases. The surface area and rate of evaporation are proportional to each other. Humidity: The rate of evaporation decreases with an increase in humidity.

hope this answer helps you..........;)