Search over 10,000 free study notes

A catalyst is something that increases the rate of a reaction without being used up itself. At the end of the reaction, the catalyst remains unchanged.

Sodium Chloride has a high melting point, as it has a giant ionic lattice hence has strong electrostatic forces of attraction between oppositely charged ions, which requires lots of energy to overcome the...

Compounds with the same molecular formula but have different structural formulas.

Ammonia is NH₃.
Nitrogen has a relative atomic mass of 14.
Hydrogen has a relative atomic mass of 1.
14 + (3 x 1) = 17
Ammonia has a relative molecular mass of 17.

Balancing means that you have the same number of atom on one side as you do on the other. The reason for balancing is because atoms are not lost or created during a reaction. Keep in mind that when you ba...