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
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Understanding the acid-base behaviour of aqueous transition metal ions
In aqueous solutions of transition metal ion salts, the metal ion is invariably part of a complex known as an
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Isomerism in transition metal complexes
Structural isomers These are compounds with the same number and type of atoms but the atoms are bonded in different
Practical techniques are not just for the lab!
One of the best aspects of Chemistry A level is that you get to do lots of practical work 😎.
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When is an answer NOT actually an answer?
when your answer is in fact just your working out … This is without doubt the most frustrating thing examiners
Coordination chemistry
The coordination number of a complex is the number of atoms making coordinate or dative covalent bonds to the central
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
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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