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
Identifying anions and cations using chemical tests
Figuring out which cations and anions we might have in an unknown aqueous solution is a form of qualitative analysis.
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How to learn better!
a deep dive into the strategies that actually work There has been a surprising amount of research into how we
How to identify transition metal ions in solution
Identifying which ions we might have in a solution is known as qualitative analysis. The chemical tests we carry out
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Ligand exchange reactions in transition metal complexes
The ligands in a transition metal complex can be exchanged e.g. ammonia ligands replacing water ligands. This happens either because
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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 😎.
Continue readingPractical techniques are not just for the lab!
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