1.
Chemistry is the scientific study of the structure of substances and of the way that they react with other substances.
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2.
The ~ of an organism or a material is the chemical substances that make it up and the chemical reactions that go on inside it.
We have literally altered the ~ of our planet’s atmosphere...
If the supply of vitamins and minerals in the diet is inadequate, this will result in changes in body ~.
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3.
If you say that there is ~ between two people, you mean that is obvious they are attracted to each other or like each other very much.
...the extraordinary ~ between Ingrid and Bogart...
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