Answer :
The chemists such as analytical chemists determine the structure, composition, and nature of substances by examining and identifying their various elements or compounds. These chemists are crucial to the pharmaceutical industry because pharmaceutical companies need to know the identity of compounds that they hope to turn into drugs.
The chemist routinely test existing chemicals to known about the changes occur in existing chemicals and behavior of chemicals which sometimes become toxic drug .
Since, chemicals are very reactive. Some are so reactive that even it reacts with air and form another compound and loss their original identity like their structure, composition and property and turn into toxic chemical.
So, it is very necessary to keep that chemicals in proper way and to know about the changes occur in existing chemical, it very essential for analytical chemist to test that chemical.
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