Periodic Table

Question 1

Group 1

Answer 1

Alkali metals
Good conductors of heat
When cut shiny
Reactivity increases down the group
When reacted with water produce metal oxide + hydrogen

Question 2

Group 7

Answer 2

The halogens
Going down group melting points increase and boiling points
Going down the intermolecular forces between molecules get stronger
More heat energy is needed to overcome these forces.