How do geologists track the movement of tectonic plates?

How was coal formed?

How was limestone formed?

How was salt formed?

How do geologists study sedimentary rocks to find evidence of the conditions under which they were formed?

Where do chemical industries grow up?

What is salt (sodium chloride) used for?

Where can salt be obtained from?

How can underground salt be obtained by mining?

How can salt be obtained by solution mining?

How can the methods of obtaining salt have an impact on the environment?

What are the advantages of adding salt to food?

What are the health implications of eating too much salt?

What are the roles of Government departments, such as the Department of Health?

What were alkalis used for before industrialisation?

What are some traditional sources of alkali?

What do alkalis make when they neutralise acids?

What are soluble hydroxides and carbonates?

What are the products when an alkaline hydroxide reacts with acid?

What are the products when an alkaline carbonate reacts with acid?

What happened in the 19th Century?

What were the harmful effects of the Leblanc process?

How can pollution products sometimes be solved?

The properties of a _________ are completely different from the __________ from which it is made.

What is chlorine used for?

How did the introduction of chlorine to treat drinking water make a difference to public health?

What may the disadvantages of chlorinating water be?

What is electrolysis?

How is chlorine now obtained?

What are the uses of the chlorine, sodium hydroxide, and hydrogen produced by electrolysis of brine?

Why do some toxic chemicals cause problems?

What is PVC?

What are the risks of using plasticisers?

What is a Life Cycle Assessment?

What are the four stages of a Life Cycle Assessment?