Paper 2: The Halogens Flashcards
1
Q
What group number is the halogens?
A
Group 7
2
Q
What state and colour is fluorine (F2) at room temperature?
A
Gas & pale yellow
3
Q
What state and colour is chlorine (CL2) at room temperature?
A
Gas & yellow-green
4
Q
What state and colour is bromine (br2) at room temperature?
A
Liquid & Red-Brown
5
Q
What state and colour is iodine (I2) at room temperature?
A
Solid & dark-grey
6
Q
What happens as you go down group 7?
A
Melting and boiling point increases
Intermolecular forces between each molecule become stronger
More heat energy is needed to overcome the forces
7
Q
What happens when simple molecular substances melt or boil?
A
Weak intermolecular forces are overcome
Strong covalent bonds joining atoms together in each molecule do not break
