Inorganic Chemistry - Group 7

Question 1

what is the colour and state of chlorine at room temperature?

Answer 1

green gas

Question 2

what is the colour and state of bromine at room temperature?

Answer 2

red-brown liquid

Question 3

what is the colour and state of iodine at room temperature?

Answer 3

grey solid

Question 4

what happens to the state as you go down group 7?

Answer 4

the state goes from gas to solid

Question 5

what happens to the colour as you go down group 7?

Answer 5

it goes from yellow to black (gets darker)

Question 6

what happens to the reactivity as you go down group 7?

Answer 6

reactivity decreases

Question 7

what happens when you react to a halogen with a compound of a less reactive halogen?

Answer 7

the more reactive halogen will displace the less reactive halogen

Question 8

what happens when you react chlorine with potassium chloride, bromide and iodide?

Answer 8

potassium chloride: no change
potassium bromide: colourless to orange (chlorine displaces bromine)
potassium iodide: colourless to brown (chlorine displaces iodine)

Question 9

what happens when you react bromine with potassium chloride, bromide and iodide?

Answer 9

potassium chloride: no change
potassium bromide: no change
potassium iodide: colourless to brown (bromine displaces iodine)

Question 10

what happens when you react iodine with potassium chloride, bromide and iodide?

Answer 10

potassium chloride: no change
potassium bromide: no change
potassium iodide: no change