Calculations for AS and A level Chemistry
Being confident in tackling different types of mole calculation is the foundation upon which much of A level chemistry stands
From the blog
What is a complex ion?
d-block metal cations readily form complexes with ligands – neutral molecules such as water or anions such as the chloride
Writing the electron configuration for a transition metal
The transition metals are d-block elements (Groups 3-12 of the Periodic Table) whose atoms have a partially filled d-orbital or
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It’s not just WHAT you know, it’s HOW you write it!
I know, you’re studying Chemistry not English Lit but the one thing that sets A* grade students apart from the
Continue readingIt’s not just WHAT you know, it’s HOW you write it!
Bonding in the nitrogen oxides and oxyanions
Nitrogen bonds with oxygen to from a number of oxides and oxyanions, the most common of which are listed below
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Explaining trends in the oxides of Period 3
The trend in the bonding and structure of the Period 3 oxides can be explained in terms of the increasing
The elements of Period 3
Atomic radius Dedicated post explaining the trend in atomic radius is right here! Melting points and structure The melting point
Explaining the trend in atomic radius across Period 3
Before we jump straight in, we really need to define how we measure the radius of an atom … This
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The reactions of acyl chlorides and acid anhydrides
Acyl chlorides and acid anhydrides are both more reactive than carboxylic acids, reacting with a wide range of nucleophiles and
Continue readingThe reactions of acyl chlorides and acid anhydrides
Making and breaking esters
Making esters Esters are a derivative of carboxylic acids and formed from the reaction between a carboxylic acid and an
Why are carboxylic acids acidic?
Carboxylic acids are weak organic acids. All acids are proton donors and the more stable the resulting anion (in this