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The ionisation energy across a period increases as the effective nuclear charge increases but the shielding stays the same. Effective nuclear charge= the electrostatic 'pull' that an electron 'feels' from a ...

A catalyst lowers the activation energy of a reaction and therefore increases the rate of reaction. The catalysts reacts with the reactants but is regenerated again in the reaction so it is not used up.

If you add an acid to a metal oxide you get a salt and water. For example: HCl + NaOH ---> NaCl + H 2 O

A nucleophile is a species which can donate a lone pair of electrons to an electron deficient species, known as an electrophile. By doing this, a chemical bond is formed.An example of a reaction involving a ...

Chirality (or optical isomerism) is a physical property of a molecule which has a non-superimposable mirror image. In other words, a molecule which, when reflected cannot be rotated in any way to make the or...