Concept explainers
Interpretation:
Branch of chemistry that studies the composition of substances and the environmental impact of chemicals is to be named.
Concept introduction:
Chemistry is the branch of science which studies the composition of matter and explains their properties. It is used to study the reactions involving formation of new substances.

Answer to Problem 35A
The composition of substances is studied under
Explanation of Solution
The composition of substances is studied under analytical chemistry. And the environmental impact of chemistry is studied under environmental chemistry.
In analytical chemistry, studies and uses of instruments, and methods that separate two components, identify, and quantify matter are practiced. In environmental chemistry, studies of chemical processes occurring in water, air, terrestrial and living environments and how human activities are affecting them are practiced.
Hence, composition of substances is studied under analytical chemistry. And the environmental impact of chemistry is studied under environmental chemistry.
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