Why Instrumental Methods Are Useful Flashcards

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What is an instrumental method of chemical analysis?

It is a way to find out what a substance is by using a machine.

Why are instrumental methods often more accurate than simple chemical tests?

Machines can measure very small changes and do not get tired, so results are very exact.

In chemistry, what does it mean when a method is described as 'sensitive'?

It can detect very small amounts of a substance, even when only a tiny trace is there.

Why is high sensitivity a useful feature of instrumental methods?

It lets chemists find harmful substances at very low levels, before they become dangerous.

Why is the speed of instrumental methods useful?

They give results quickly, so decisions can be made fast in labs, factories and hospitals.

How do instrumental methods help when there are many samples to test?

The machines can test lots of samples one after another, often without a person watching.

Why is it useful that instrumental methods can work with very small samples?

Only a tiny amount is needed, so there is less waste and the rest of the sample can be kept.

How do computers make instrumental methods even more useful?

They can store, sort and show data clearly, and help spot patterns in the results.

Why are instrumental methods useful for checking pollution in air or water?

They can quickly detect very low amounts of pollutants, so problems can be found and fixed early.

Why are instrumental methods useful in testing medicines or blood samples?

They give fast, accurate results from small samples, which helps doctors choose safe treatments.