1. Compare an element, compound and mixture.

An element contains just one type of atom. A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds.

Explanation:

pls

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

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