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 | So, is their a basic unit of atoms? | |
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| Actually, yes. They are called elements. Elements are only made up of one kind of atom. | |
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| Wait, only one kind? Can atoms combine or something? | |
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| Right again, atoms can combine to form compounds. Compounds are made up different atoms. | |
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| Could you give me an example? | |
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| Water is probably the most famous compound. Its scientific name is H2O. | |
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