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Elements and compounds are related in sense that elements bond together chemically to make compounds. A compound can be broken down into pure elements.

Example. Water (H20), Is Hydrogen (pure element) and Oxygen (also pure element) bonded together to form a compound (H20).

However, while a compound can be broken down into its simple elements, an element cannot be broken down. It is said that an element is the purest whole form.

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Some common substances include both elements (pure elements) and compounds. Air, for example, contains elements such as nitrogen and oxygen, and also compounds such as carbon dioxide (CO2), which is made from carbon and oxygen.

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Can compounds composed of the same element have similar or dissimilar properties?

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