The group 7 elements are all reactive non-metals. They react with metals to form metal halides, and with hydrogen to form acidic hydrogen halides. Reactivity decreases down the group.
Where in the periodic table are the halogens found?
On the far left
In the middle
Near the right-hand side
What does bromine look like?
A green gas
A brown liquid
A purple/black solid
Iodine is a halogen. What is the formula of iodine?
What happens to the melting points and boiling points as you go down group 7?
They stay roughly the same
The densities (in g/dm3) of three halogens is given below:
Chlorine = 3.2
Bromine = 3,120
Iodineccc = 4,930
Which of the following could be the density of fluorine, the halogen above chlorine in group 7?
What is produced when lithium reacts with bromine?
What kind of solution is formed by the product of the reaction between hydrogen and bromine?
When chlorine is passed over damp litmus paper, what happens?
The litmus paper turns blue then white
The litmus paper turns black then blue
The litmus paper turns red then white
Which halogen will displace bromine from a solution of potassium bromide?
The ionic equation below shows how bromine can displace iodine from solutions of sodium iodide:
2Cl2 + 2Na+Br- → Br2 + 2Na+Cl-
What is oxidised in this reaction?