These downloadable videos and animations are part of the multimedia package Stuff and Substance, developed by the Gatsby Science Enhancement Programme (SEP). They can be used to predict the possibility of the gas state with the particle model and understand that ‘gases...

Details of this challenging experiment were published in this leaflet from the Unilever Laboratory Experiment in 1965. Requirements included a pyrophoric nickel catalyst supplied by Unilever, hydrogen from a cylinder and a vegetable oil treated with activated charcoal to remove impurities. The necessary apparatus...

This Cape Farewell video clip explains that phytoplankton absorb carbon dioxide and can act as indicators of global warming. The video clip includes a discussion about a hypothesis that increasing phytoplankton could balance the effects of global warming.

This Catalyst article looks at the changing definition of the kilogram, a unit of mass and a base unit in the SI system (the International System of units). It has been found that the International Prototype Kilogram (IPK), made in 1879 and kept in a vault in Paris, has lost about 50microgrammes of mass over the...

The Naked Scientists are a group of physicists, science communicators, astronomers and researchers from Cambridge University. They use radio, live lectures and the internet to strip science down to its bare essentials and promote it to the general public.

Podcasts from the Naked Scientists are supported by...

This is one of the 18 Background Books published for Stage II of the Nuffield Chemistry Sample Scheme. The books were highly illustrated and designed to be attractive. This book outlines the chemical nitrogen problem and then describes the limitations of the Cyanamid process and the solution devised by Haber and...

This is one of the 18 Background Books published for Stage II of the Nuffield Chemistry Sample Scheme. The books were highly illustrated and designed to be attractive. This book describes aspects of the history of chemistry by exploring the developments that led to the Periodic Table.

There are 4 parts to...

Work done in this Nuffield 13 - 16 module followed from the S unit called ‘Circuits’. This D unit provided enough material for eight double periods during a Further Science course and built on the content of the S units for Single Science. The teachers’ guide included...

This Unilever Laboratory Experiment describes the preparation of soap from a mixture of cooking oil and dripping. The leaflet was first published in 1964 and so lacks modern safety guidance. The procedure is authentic; it is designed to produce a convincing sample of soap. This means that it could be the basis of...

The method of preparation of a sulphonate paste described in this Unilever Laboratory Experiment is basically the same as that used by Unilever in the large-scale production of soapless detergents at the time of publication in 1964. The required reactants included an alkylbenzene hydrocarbon supplied by the...