Halogens

Question 1

Halogens are group

Answer 1

7

Question 2

Halogens are … Molecules

Answer 2

Diatomic

Question 3

Fluorine is which state and which colour

Answer 3

Gas and yellow

Question 4

Chlorine is which state and which colour

Answer 4

Gas and green

Question 5

Bromine is which state and which colour

Answer 5

Liquid and red with a brown vapour

Question 6

Iodine is which state with which colour

Answer 6

Solid and dark grey with a purple vapour

Question 7

Halogens need to be handled in…

Answer 7

A fume cupboard

Question 8

Astatine is…

Answer 8

Solid and radioactive

Question 9

Down the halogens the MP and BP … And the colour gets

Answer 9

Increase and the colour gets darker

Question 10

Halogens react with hydrogen to form

Answer 10

Hydrogen halides

Question 11

Hydrogen halides are…

Answer 11

Steamy, poisonous and acidic gases

Question 12

Hydrogen halides are… In water

Answer 12

Very soluble

Question 13

Hydrogen halides react with water to produce

Answer 13

Solutions of acids (making H+ ions)

Question 14

Hydrogen halides are not … As gases

Answer 14

Acidic

Question 15

When hydrogen halides are dissolved in organic solvents there is…

Answer 15

No colour change

Question 16

Halogens are … Reactive

Answer 16

Highly reactive as they only need to gain one electron

Question 17

Fluorine reacts with hydrogen with a…

Answer 17

Violent explosion, even in the cold or dark

Question 18

Chlorine reacts with hydrogen with a …

Answer 18

Violent explosion is exposed to a flame or sunlight

Question 19

Bromine reacts with hydrogen with a…

Answer 19

Mild explosion if a bromine vapour/hydrogen mixture is exposed to a flame

Question 20

Iodine reacts with hydrogen with a…

Answer 20

Partial reaction to form hydrogen iodide if vapour is heated continuously with hydrogen

Question 21

Sodium burns in chlorine to produce

Answer 21

The ionic white solid sodium chloride (salt)

Question 22

In the reaction between sodium and chlorine the sodium has been … And the chlorine has been … In a … Reaction

Answer 22

The sodium has been oxidised and the chlorine has been reduced in a redox reaction

Question 23

Equation for sodium and chlorine reaction

Answer 23

2Na(s) + Cl2(g) = 2NaCl(s)

Question 24

Halogens are … Reactive as you go down the group

Answer 24

Decreasingly

Question 25

Halogens can … Each other

Answer 25

Displace

Question 26

Iodine turns Volasil…

Answer 26

Pink

Question 27

Finding the reactivity of halogens is done by…

Answer 27

Reacting the elements with potassium halides (a colour change will indicate a reaction)

Question 28

Colour changes between halogens and potassium halides are due to…

Answer 28

The less reactive element being displaced

Question 29

In a reaction between halogens and potassium halides, potassium is…

Answer 29

A spectator ion

Question 30

In a displacement reaction with potassium iodide and either chlorine or bromine, you tell the difference between the two as…

Answer 30

Volasil (an organic solvent) is added and will turn iodine pink while bromine stays orange

Question 31

Displacement reactions with halogens are … Reactions

Answer 31

Redox

Question 32

Reaction between Potassium Chloride and Bromine?

Answer 32

Stays orange (no reaction)

Question 33

Reaction between potassium chloride and Iodine?

Answer 33

Stays brown (no reaction)

Question 34

Reaction between Potassium bromide and Chlorine?

Answer 34

Turns orange

Question 35

Reaction between potassium bromide and iodine?

Answer 35

Stays brown (no reaction)

Question 36

Potassium Iodide and chlorine reaction?

Answer 36

Turns brown

Question 37

Reaction between potassium iodide and bromine

Answer 37

Turns brown