Bbc: Gcse Bitesize: Uses and Dangers of Radiation

This lesson focuses on analyzing and identifying substances. Substances can be analyzed using a variety of methods including paper chromatography, gas chromatography and mass spectrometry. After reading about the different techniques,...

This lesson focuses on different types of chemical substances, distinguishing between pure substances and mixtures, and changes of temperature based in substance. It provides a link to a test.

This site provides a list of the topics and links to the Physics (Combined Science)courses offered in GCSE Bitesize and a list of contents of each. The topics include the following: Energy, Electricity, Matter, Radioactivity, Forces,...

Energy is transmitted by conduction, convection or radiation.The conductivity of materials can be compared by examining the time taken to transmit energy through them. This lesson explains how conduction works and provides a link to a test.

This lesson focuses on corrosion and rusting which can be prevented by keeping oxygen and water away, and by sacrificial protection. A link to a test is provided.

This lesson focuses on cloning. Plants can make identical copies of themselves by asexual reproduction, for example by tubers and runners. Humans have been cloning plants for years and have recently started to develop techniques to clone...

This lesson focuses on Exothermic and Endothermic Reactions. Exothermic reactions transfer energy to the surroundings. Endothermic reactions take in energy from the surroundings. It provides links to a video and a test.

There are different ways to separate mixtures, for example by filtration, crystallization, distillation, or chromatography. The method chosen depends upon the type of mixture.

This lesson focuses on forces and elasticity. Forces are responsible for changing the motion of objects. If more than one force is present, the shape of an object can also be changed. A link to a test is provided.

This lesson focuses on cell specialization. This cell must divide to produce a multi-cellular organism. It must also differentiate, so that its cells develop features that enable them to fulfil specific roles. Links are provided to a...