Anyone who’s studied chemistry will be overly familiar with titrations. It’s an analytical technique that can be used to find the concentration of a solution (the amount of a solute dissolved in it). I put this graphic together primarily to remind my A level students of some of the key aspects of titrations, but as well as being a handy guide for them, it’s a useful introduction to the technique for non-chemists too!
Know your sulfates from your sulfites, and your chlorates from your perchlorates? This graphic gives a helping hand with remembering the names, formulae and charges of various different polyatomic ions. The selection covers all of the ions GCSE students are likely to come across, as well as the vast majority of those that will be encountered by A level students.
Most of the chemical symbols for elements in the periodic table make perfect sense; there are a small selection, however, that seem to bear no relation to their element’s name. After the periodic table of rejected element names a few days ago, questions about these elements came up, so here’s a look at their confusing symbols, along with the reasons behind them.
Back to some chemistry basics for today’s post, with a look at the nine different hazard symbols commonly used to warn of chemical dangers. These symbols are frequently encountered in the lab – and also on some household products – and whilst some are self-explanatory, others can require a little more in the way of explanation, which is what this graphic aims to do.
Glassware in the laboratory comes in a range of different shapes and sizes, and is used for a number of purposes. Don’t know your round-bottomed flask from your Florence flask, or your pipettes from your burettes? This graphic has you covered. Below there’s also a little detail on the usage of each.
One for the chemistry students (and teachers!) out there today, with a look at how we can work out the shapes of some simple molecules using Valence Shell Electron Pair Repulsion (VSEPR) theory. These shapes are decided by the arrangement of electrons around the central atom in the molecule.
