Salts origins and importance Flashcards
What is the importance of salt(sodium chloride) and its uses?
Used for flavouring and preserving in food, as a source of chemicals and to treat roads in winter
How can salt be obtained?
Mining underground salt deposits, evaporating and collecting sea water
How are different salts used depending on they are obtained?
Rock salt obtained from mining is used to treat roads as it isn’t pure enough for use in cooking, salt in foods is taken from sea evaporation as this is purest.
What are the affects of salt obtaining methods?
Solution mining can cause subsidence and about half the rock salt must be left in place for support,
Evaporating salt from sea water takes up large areas and spreads salt into the local environment.
Why is salt used in food?
It is used as the main flavouring of many things, and at high levels can prevent bacteria growth
What are the health implications of eating too much salt?
High blood pressure, heart failure and strokes, it is therefor known as a hazard
How is risk calculated?
The chance of something happening and the severity of the consequences of it happening
What role does the government have in salt intake?
They must carry out risk assessments in relation to chemicals in food,
advising the public in relation to the effect of food on health.
