Extension

Question 1

Flame Test: Lithium

Answer 1

Red

Question 2

Flame Test: Sodium

Answer 2

Yellow

Question 3

Flame Test: Potassium

Answer 3

Lilac (Purple)

Question 4

Flame Test: Calcium

Answer 4

Orange-red

Question 5

Flame Test: Strontium

Answer 5

Red

Question 6

Flame Test: Barium

Answer 6

Green

Question 7

Flame Test: Copper

Answer 7

Blue-green

Question 8

Flame Test: Iron

Answer 8

Yellow

Question 9

Valency of Chromium

Answer 9

1

Question 10

Valency of Copper

Answer 10

1

Question 11

Hydrochloric Acid

Answer 11

HCl

Question 12

Sulfuric Acid

Answer 12

H₂SO₄

Question 13

Nitric Acid

Answer 13

HNO₃

Question 14

Carbonic Acid

Answer 14

H₂CO₃

Question 15

Features of a Primary Standard

Answer 15

Features of a Primary Standard:
- High molar mass
- Obtainable in pure form
- Unreactive

Question 16

Features of Ideal Gases

Answer 16

Features of Ideal Gases:
- Remains a gas regardless of temperature
- Linear motion of particles
- Elastic collisions between particles
- Particles take up a negligible volume

Question 17

Compare and Contrast Bohr and Schrodinger

Answer 17

Bohr:
- Treated atoms as particles
- Moves in fixed orbits
- Energy affects orbital - levels of energy
- Could not interpret more complex spectra

Schrodinger:
- Treated atoms as waves
- Could find the location of electrons to a high degree
- Levels of energy

Question 18

Identify the purpose of a bulb and graduated pipette

Answer 18

Bulb pipette has a bulb in the centre and can only measure a specific volume

Graduated pipette has increments of volume

Question 19

Trigonal Planar

Answer 19

3 bond pairs
0 lone pairs

Question 20

Tetrahedral

Answer 20

4 bond pairs
0 lone pairs

Question 21

Trigonal Pyramidal

Answer 21

3 bond pairs
1 lone pair

Question 22

Relationship between molar mass and dispersion forces

Answer 22

Proportional