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10 October, 10:28

What are elements made of?

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  1. 10 October, 10:59
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    Elements are substances that cannot be separated into simpler substances. Salt is made up of the elements sodium and chloride. Water is made up of the elements hydrogen and oxygenn
  2. 10 October, 11:34
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    Atoms An element is a substance that is made entirely from one type of atom. For example, the element hydrogen is made from atoms containing a single proton and a single electron. If you change the number of protons an atom has, you change the type of element it is.
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