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How do elements, compounds and mixtures differ?

Answer 1

Elements are particles with the same #"atomic number, Z"#.

And what is #Z# but the number of positively charged, massive particles that comprise (part) of the element's nucleus.

#Z=1, H; Z=2, He; Z=3, Li; ..........Z=24, Cr....#

Mixtures are simply two or more elements and compounds that are not chemically bound together. The best example of a mixture is the air we breathe, which is made up of the compounds carbon dioxide and dioxygen as well as elemental nitrogen. Compounds are mixtures of elements that are chemically bound together.

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Answer 2

Noah Aldrich

Compounds are substances made up of two or more different types of atoms chemically bonded together in fixed ratios; mixtures are combinations of two or more substances physically mixed together without chemical bonding between their components, and their proportions can vary. Elements are pure substances made up of only one type of atom.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.