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iChem tutorials and self learning quizzes


These resources are designed for self study and contain tutorials and self assessment quizzes on key aspects of first year chemistry.

  • Atomic Symbols: how to read atomic symbols to extract the number of electrons, protons and neutrons for atoms, cations and anions.
  • Balancing chemical equations: how to write and then balance chemical equations.
  • Cell potentials: how to calculate standard cell potentials from half cell potentials.
  • The Elements: games and quizzes to help familiarity with the Periodic Table.
  • Empirical formula calculator: work out the empirical formula of a compoound from its elements and their percentage masses.
  • Flashcards: flashcards on a variety of topics including common organic functional groups and common cations and anions.
  • Functional group flip card game for mobiles: game to help learn and remember common organic functional groups on your smart phone.
  • Galvanic cells: understanding what is going on when a cell is operating, including the direction of electron and ion flow.
  • Heat capacity: the difference between heat and temperature and how to convert between them using heat capacities.
  • Inorganic nomenclature: how to write the formula and names of inorganic compounds.
  • Nomenclature for complexes: how to write the formulae and names of transition metal complexes following the updated IUPAC rules.
  • Le Chatelier's principle: how to predict the direction in which an equilibrium will shift when a change is applied.
  • Lewis structures: how to draw Lewis structures for molecules obeying and disobeying the octet rule.
  • Lewis structure maker: build interactive Lewis structures containing multiple bonds and lone pairs for molecules obeying and disobeying the octet rule.
  • Limiting reagents: how to work out which reagent is the limiting reagent in a reaction, and how much product will result.
  • MO energies: study the effect of orbital overlap and energies on bonding and the energy and form of molecular orbitals.
  • MO diagrams: build interactive molecular orbital diagrams for diatomic molecules.
  • Molar mass calculator: simply enter a formula and calculate the molar mass, the number of moles in 1 g and the percentage by mass of each element.
  • Molar mass calculator for mobiles: simply enter a formula and calculate the molar mass, the number of moles in 1 g and the percentage by mass of each element on your smart phone.
  • Moles: introduction to the concept of the mole and help with converting between mass, molar mass and moles.
  • Organic isomers: tutorial on isomerism in organic chemistry, including chirality.
  • Organic structures: tutorial on how organic structures are drawn as condensed structural formulae and as stick structures and how to convert between them.
  • Oxidation numbers: how to work out the oxidation number of an element in a molecule or ion.
  • Predicting nuclear decay: how to predict whether a nucleus is radioactive and whether it will undergo β+, β- or α decay.
  • Radioactive decay equations: how to write and balance nuclear equations for β+, β- or α decay.
  • Redox reactions: how to write redox equations by combining half cell reactions.
  • Significant figures: how to work out the number of significant figures that can be justified when adding, dividing, multiplying and subtracting measurements.
  • Solutions: how to work out concentrations and how to convert between molarity, moles and volume.
  • Common crystal structures: 3D, rotatable and interactive versions of the commonest crystal types
  • Close packing: buidling solids based on repeating ABABABAB... and ABCABCABC... layers
  • Packing and unit cells: relationship between the cubic and hexagonal close packed layers and their unit cells
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