A Year 11 module from the Salters Key Stage Four double award science course. This module introduces ideas about how living organisms control their internal environment and respond to changes in their external environment. Students are reminded that few living things...

This video demonstrates a convection experiment for GCSE Physics using potassium permanganate in water with a Bunsen burner.

The enzyme lactase is widely used in the dairy industry to convert the naturally occurring disaccharide sugar lactose into glucose and galactose. In this practical students investigate the treatment of milk with lactase. Following treatment they test the glucose content of the converted milk, and compare products...

A Catalyst article looking at the use of gas and electric for cooking. The article focuses on the latest hobs which use radiant, halogen or induction electric heating, to see if they can compete with gas.

This article is from Catalyst: GCSE Science Review 2004, Volume 14, Issue 3.

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Comets are considered to be time capsules containing information about the conditions of the early Solar System. In order to understand what comets are, where they come from, and their influence on the evolution of Earth, it is necessary to find out what material they contain. This teacher demonstration and student...

A case study produced by the Engineering and Physical Sciences Research Council (EPSRC) which looks at an affordable cooking stove that generates electricity and could transform lives in the world’s poorest communities. It burns biomass such as wood or dung and converts the heat produced into electricity. Over two...

A Catalyst article about the work of a scientist from the British Antarctic Survey, gathering data about climate change by studying ice cores from Antarctica. One of the areas of research was to find out whether it is possible to learn how much sea ice there was around Antarctica in the past by measuring how much...

A Catalyst article explaining how scientists have found that the overturning circulation in the Atlantic Ocean, which maintains Europe’s moderate climate, was weaker in 2004 by 30% relative to earlier estimates. What does this mean and what impact could it have on our climate? Scientists' research and their climate...

This Catalyst article looks at how scientists can use material recovered from archaeological sites to see how crops have been introduced to different countries over the history of farming. Three processes by which some plant material can be preserved are explained. The ratio of carbon isotopes from the collagen in...

This is one of the 14 Background Books published for Stage III of the Nuffield Chemistry Sample Scheme. The books were highly illustrated and designed to be attractive. This book describes applications of chemistry to solve practical problems.

There are three parts to this book:
*Part 1: What is...

From the Technology Enhancement Programme (TEP), this publication looks at the process and problems caused by the corrosion of metals. The first part of the publication gives background information for students on elements, atoms, ions and electrochemical reactions involved in rusting. This helps students to...

Produced by the Science and Technology Facilities Council (STFC), Cosmic Rays is a colour A5 leaflet that opens out into an A2 double-sided wallchart describing cosmic rays and where they come from, what effect they have on Earth and how they are used in scientific applications. Sections of the leaflet cover: *The...