Question

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All elements are pure substances, but not all pure substances are elements. Pure substances can be either elements or compounds. Elements are substances made up of only one type of atom, while compounds are composed of two or more different types of atoms chemically bonded together.

Answer 1

[AI-generated answer — Bot GPT 3.5]

Every substance is either an element or a compound, but not all pure substances are elements. An element is composed of a single type of atom, whereas compounds consist of multiple types of atoms that are chemically bonded together.