Diatomic Molecules (Elements)

Question 1

What is a Diatomic molecule

Answer 1

Two of the same elements that go round in pairs together

Question 3

How do you balance chemical formulas

Answer 3

If you had:
___ Mg + ___ O2 Arrow ____ MgO
Reactants. Product
You would make it:
2Mg +. 2O2. Arrow. 2MgO
__ K. +. __ H2O Arrow. __ KOH +. __H2
2K. +. 2HO. Arrow. 2KOH. +. H2
Potassium hydroxide

Question 4

What are the Diatomic molecules (Elements)

Answer 4

H2 Hydrogen 
O2 Oxygen
N2 Nitrogen 
Cl2 chlorine
Br2 Bromine
I2 Iodine 
(Last 3 are from group 7 - Halogen)