Unit 2: S1.1 - S1.3

Question 1

Filtration

Answer 1

(Heterogenous) insoluble solid + liquid
Funnel+ filter paper+ beaker

Question 2

Evaporation

Answer 2

(Homogenous) solute + solvent
Evaporates, leaves solute behind

Question 3

Solvation

Answer 3

(Heterogenous) solid + solid
Dissolve in substance (one=soluble)

Question 4

Distillation

Answer 4

(Homogenous) liquid mixture
Different volatility / boiling point

Question 5

Paper chromatography

Answer 5

(Homogenous) mixture of solutes in solvent
Differences in solvation → different rates
Î affinity → move further up paper

Question 6

Recrystallisation

Answer 6

Remove impurities from solid

Question 7

Gas → solid

Answer 7

Deposition

Question 8

Solid → gas

Answer 8

Sublimation

Question 9

Spectrum
Higher to lower frequency

Answer 9

Gamma ray, X-ray, UV, visible, IR, microwaves, radio

Question 10

Ionization energy

Answer 10

Amount of energy required to remove one mole of elections from one mole of atoms of an element in the gaseous state

Question 11

Second lonization energy

Answer 11

Amount of energy required to remove one mole of elections from one mole of +1 ions in the gaseous state

Question 12

Electron configuration exceptions

Answer 12

[Cr]:
[Cu]:

Question 13

n= ♾

Answer 13

Convergence limit
Frequency/wavelength corresponding to ionisation

Question 14

kinetic molecular theory/ideal gas behavior

Answer 14

1. All matter is made up of small particles.
2. all particles have kinetic energy
3. The amount of kinetic energy is proportional to the temperature of the substance
4. Collisions between particles are elastic, which means no loss in kinetic energy.

Question 15

temperature (T)

Answer 15

average kinetic energy (E,,k) of particles