Chemical quantities

The experiments in this section can be used to consolidate knowledge and understanding of, for example, how chemists work out the formulae of compounds or calculate how much product can be obtained in a reaction. Also included are titration experiments.

While we are still at an early stage with this website it's probably more useful to look at the page with our complete list of experiments in alphabetical order. See the list on About this website.

We are starting with GCSE-level experiments.
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Experiments

• Combustion of hydrogen in air

  Mixtures of hydrogen and air are ignited, to find which proportions of the two gases by volume produce the loudest explosion (‘pop’).

• Reaction of hydrogen and oxygen: reacting masses

  Copper(II) oxide is reduced by hydrogen. The mass loss of the oxide and mass gain due to water formation give the reacting masses of oxygen and hydrogen respectively.

• A thermometric titration

  A titration between sodium hydroxide and hydrochloric acid using the accompanying temperature change as a means of determining the end-point.

• Determination of Relative Atomic Mass

  The relative atomic mass of magnesium is determined by reacting a known mass of magnesium with dilute acid and measuring the volume of hydrogen produced.

• Finding the formula of hydrated copper(II) sulfate

  The formula of hydrated copper(II) sulfate is found by heating a sample to remove the water of crystallisation.

• Determining the relative molecular mass of butane

  A simple, quick and direct method for finding relative molecular masses (RMM) of gases, such as butane, that are available in small pressurised cylinders.

• Microscale extraction of copper

  This experiment involves reducing copper oxide to copper using hydrogen on a small scale so it is safe for students to perform themselves.