Group 7- the halogens Flashcards
1
Q
What are group 7 metals referred to as?
A
The Halogens.
2
Q
What happens to the halogens as you go down group 7?
A
- They become less reactive.
- Higher melting point.
- Higher boiling point.
3
Q
What are the halogens?
A
They are all non-metals with coloured vapours.
4
Q
What is Flourine?
A
A very reactive poisonous yellow gas.
5
Q
What is chlorine?
A
A fairly reactive poisonous dense green gas.
6
Q
What is Bromine?
A
A dense poisonous red-brown volatile liquid.
7
Q
What is Iodine?
A
A dark grey crystalline solid or a purple vapour.
8
Q
What do all halogens exist as?
A
Molecules which are pairs of atoms.
9
Q
What do the Halogens form with metals?
A
ionic bonds (1-) called halides.
10
Q
What will a more reactive halogen do to a less reactive one?
A
The more reactive halogen will displace the less reactive halogen, from an aqueous solution of its salt.
