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It's experimentally observed that ionisation energies have a general increase as one moves across the period: the first ionisation energy of lithium is ~500 kJ mol‑1, whereas that of n...

Temperature, pressure, surface area and concentration all affect the rate of a chemical reaction. 

Temperature makes the particles more energetic and increases the frequency of collisions...

Aromatic compounds contain a ring-structre e.g. Benzene whereas Aliphatic molecules have a straight chain structure e.g. Butane.

There are three things to consider every single time relative reactivity is unknown: atomic radius, shielding, and number of electrons.

The reactivity is the halogens ability ...

A mole is an amount of an element or compound which contains as many atoms or molecules as is present in 12g of carbon 12 (6.02x10²³ Avogadro’s number).

We can f...