Writing Centre | Learning Guides. Practical Chemistry. Practical Chemistry. This website is for teachers of chemistry in schools and colleges. It is a collection of experiments that demonstrate a wide range of chemical concepts and processes. Some of the experiments can be used as starting-points for investigations or for enhancement activities. Many have links to carefully selected further reading and all include information and guidance for technicians. Chemistry is a practical science. Practical activities are not just motivational and fun: they also enable students to apply and extend their knowledge and understanding of chemistry in novel investigative situations, which can aid learning and memory and stimulate interest.
We have published a new set of resources to support the teaching of practical science for Key Stages 3-5. The resources are part of our Practical Work for Learning project, which explores how three different teaching and learning approaches can be applied to practical work.
Carbon cycle. Atmosphere 750 billion tonnes of carbon Carbon in the atmosphere is mostly in the form of carbon dioxide with some methane and hydrofluorocarbons. The amount of carbon dioxide in the atmosphere is increasing. Acknowledgement: NASA. Vegetation 600 billion tonnes of carbon Plants store carbon as carbohydrates made from carbon dioxide from the atmosphere. Acknowledgement: Public domain. Soil and organic matter 1,600 billion tonnes of carbon Soil contains a lot of carbon in the form of dead plant material and in the many bacteria and other small organisms that live there. Coal, oil, gas 3,300 billion tonnes of carbon Carbon has been locked up in fossil fuels, built up from once-living things, for millions of years.
Sediments and sedimentary rock 1,000,000,000 billion tonnes of carbon The carbon cycle overlaps the rock cycle. Acknowledgement: Bordalier institute. Ocean surface 1,000 billion tonnes of carbon Exchange of carbon dioxide between the ocean and the atmosphere takes place at the surface. Deep ocean. Spotlight - App of the Week Homepage.