Periodic Table Topic

What colour flame does potassium burn with?

• Green

• Pink

• Yellow

• Lilac

Group I metals react by ______ an electron

Sodium + water --> ______ _________ + hydrogen

Which of these would you see when lithium is dropped into cold water?

• A lilac flame

• Metal gets smaller and disappears

• Metal moves about on the water surface

• Metal melts into a ball

Which of these are true as you descend group I?

• Metals get more reactive

• There is more shielding

• Atomic charge decreases

• The outer electron is nearer to the nucleus

In aqueous solution, iodine is _ in colour.

In aqueous solution, iodide ions are this colour: _

In aqueous solution, bromine is _ in colour

Which is the best oxidising agent?

• No reaction