C3.3 Why do we need chemicals such as alkalis and chlorine and how do we make them? Long before industrialisation, alkalis were used in everyday life. Alkalis are very important chemicals as they NEUTRALISE acids to make salts. Traditional sources of alkali included...
C3.4 What can we do to make our use of chemicals safe and sustainable? A large number of industrial chemicals exist and have a range of uses, these uses include consumer products. There is too little data on the safety of these chemicals to judge whether they are...
C3.2 Where does salt come from and why is it so important? Salt (SODIUM CHLORIDE) is very important for the food industry (as a preservative and also to add flavour), as a source of chemicals (a use includes cleaning products) and to treat roads in winter (as salty...
C3.1 What were the origins of minerals in Britain that contributes to our economic wealth? GEOLOGISTS are scientists who study rocks and the processes that formed them. They try to explain the past history of the Earth by modelling processes that can be observed...