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Write out all the atoms that are in the equation, underneath. Then always balance the carbons first, leave the others for later. Then do the hydrogens and then the oxygens. This method is for simple equat...

Sodium chloride has a giant ionic lattice structure with ionic bonding. There are electrostatic forces of attraction between the Na⁺ ions and the Cl^- ions.

Aluminium has a lower first ionisation energy than magnesium. This is because it's outer electron is in a p-orbital in comparision to magnesium's outer electron which is in an s-orbital. The outer electro...

(a) Coal contains  Carbon (80%) Sulfur (9%) Oxygen (5%) Hydrogen (1%) other elements (5%) (b) Carbondioxide (CO2) Sulfurdioxide (SO2) Water  (H2O) (c)  Carbon dioxide: Global warming (green house effect) ...

There are a few reasons why percentage yield will never be 100%. This could be because other, unexpected reactions occur which don't produce the desired product, not all of the reactants are used in the r...