1. Mysteries of Matter: From Diffusion to Distillation

Question 1

Rank the types of matter by intermolecular forces in order of increasing strength

Answer 1

Solid (highest), Liquid, Gas (lowest)

Question 2

Movement of particles in solids

Answer 2

Vibrating in a fixed position

Question 3

Movement of particles in gas

Answer 3

Fast movement in random direction

Question 4

4 factors affect diffusion

Answer 4

Diffusion is from high concentration to low concentration.
Factors affecting:
1. Temperature (high temp high diffusion)
2. Concentration Gradient (more gradient, more diffusion)
3. Mass of substance (lighter mass, more diffusion)
4. Intermolecular space (higher, more diffusion)

Question 5

Deposition

Answer 5

Gas to Solid

Question 6

Sublimation

Answer 6

Solid to Gas

Question 7

Condensation

Answer 7

Gas to Liquid

Question 7

Suspensions

Answer 7

Heterogeneous mixture of solute and solvent where the solute particles do not get dissolved in the solvent
Ex. Mud Water

Question 8

What happens when objects are heated?

Answer 8

They expand.
If they are cooled, they contract.

Question 9

Hazard Symbols

Answer 9

TBC

Question 10

Emulsions

Answer 10

Two immiscible liquids
Ex. Paint

Question 10

Use of separating funnel?

Answer 10

To separate immiscible liquids.

Question 10

Calculate the Rf value

Answer 10

Distance travelled by solute/ Distance travelled by Solvent

Question 11

Colloids

Answer 11

Heterogeneous mixtures that scatter light but don’t settle out.
Ex. Milk

Question 12

Filteration

Answer 12

Solid from Liquid

Question 13

Evaporation

Answer 13

Solid from its solution

Question 14

Crystallization

Answer 14

Solid from its solution