Metal reactivity
Which two metals when they react with oxygen: burn brightly to form an oxide. Bonus points for symbol.
Potassium and Sodium
Which two metals when reacting with oxygen Burn brightly in the air when heated to form an oxide.
Calcium and magnesium
Which metals when reacting oxygen have a slow reaction when heated to form an oxide. (minimum 3)
Aluminium, zinc, iron, lead, copper