inorganic

Question 1

what is the trend in reactivity down group 2

Answer 1

more reactive down the group

Question 2

what is the A-level equivalent for the word reactive

Answer 2

stronger reducing/oxidising agent

Question 3

define atomisation

Answer 3

overcoming metallic bonding

Question 4

what are group 2 compounds and what does that mean

Answer 4

always ionic
= always high melting point

Question 5

describe the reaction of Mg with oxygen
and what type of reaction it is

Answer 5

bright white light
white powder formed
redox reaction

Question 6

describe the type of reaction of Mg with chlorine

Answer 6

redox

Question 7

describe the reaction of Mg with hydrochloric acid
and what type of reaction it is

Answer 7

solid disappears, fizzing
redox reaction

Question 8

describe the reaction of Mg with water/acid
and what type of reaction it is

Answer 8

forms hydroxide with state depending on solubility
redox

Question 9

descrbe the solubility rules of the hydroxide formed in the reaction of Mg and water/acid

Answer 9

mg = solid
ca = sparingly - aqueous
sr = aqueous
ba = aqueous

Question 10

describe the type of reaction of oxides with water/acid

Answer 10

acid-base reaction

Question 11

give 3 uses of group 2 compounds

Answer 11

agriculture, antacids, refractory

Question 12

give the compound of group 2 used in agriculture and its use

Answer 12

Ca(OH)2
slacked line
neutralises acidic soils

Question 13

give the name of group 2 compounds used to treat acid reflux and what they are

Answer 13

antacids
Mg(OH)2
Ca(HCO3)2

Question 14

give the group 2 compounds used for heat resistant bricks

Answer 14

refractory bricks
CaO(s)
used for building ovens, kilns, furnaces

Question 15

give the colours of chlorine in
pure:
aqueous:
organic:

Answer 15

pure: pale green
aqueous: colourless
organic: colourless

Question 16

give the colours of bromine in
pure:
aqueous:
organic:

Answer 16

pure: brown
aqueous: yellow-orange
organic: red

Question 17

give the colours of iodine in
pure:
aqueous:
organic:

Answer 17

pure: dark grey
aqueous: brown
organic: purple

Question 18

define disproportionation

Answer 18

same element, same species is both oxidised and reduced

Question 19

in halogen displacements, what is the stronger oxidising agent

Answer 19

the more reactive element

Question 19

what are 3 easy and discrete ways of measuring rate

Answer 19

• obscuring cross
  -how long it takes for bubbles to stop
• indicator colour change

Question 20

what is the one discrete hard way of measuring rate

Answer 20

mass of solid increase

Question 21

what are the 4 easy, continuous ways of measuring rate

Answer 21

-measuring the decrease in negativity
-volume of gas produced
-ph of mixture using indicator
-temperature cahnge of mixture

Question 22

what are 2 hard, continuous ways of measuring rate

Answer 22

• titrate sample
• pressure increase

Question 23

give the colours of flourine in:
-pure
-aqueous
-organic
forms

Answer 23

pure: very pale yellow
aqueous: NA
organic: NA

Question 24

what kind of bonds can halogens form

Answer 24

Halogens can form ionic bonds or covalent bonds and it achieves the same bond of gaining an electron

Question 24

what is another way of saying fluorine is the most reactive halogen

Answer 24

it is the strongest oxidising agent

Question 25

why is does flourine gain electrons the most easily

Answer 25

- smallest atomic radius -least shielding -highest attraction from nucleus