When using chemical formula it is possible to calculate the percentage composition of the chemical. This can be useful when extracting metals from ores or when making fertilisers for specific ...

The chemical formula for Magnesium Oxide, MgO, tells us that there is one atom of magnesium for every one atom of oxygen. Butane, which has the chemical formula C₄H₁₀, has four carbon atoms ...

Dr Joe Hanson, a science writer based in Austin, Texas, worked out what a single 'human molecule' might look like if the chemical elements that make it up were written out.