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02-06-2017
Chemistry

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Explain why hydrogen and oxygen are considered elements whereas water as a compound

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02-06-2017

H - hydrogen is a chemical element
O - oxygen is a chemical element

H₂ - hydrogen is a chemical substance wish a molecule comprising two atoms
O₂ - oxygen is a chemical substance wish a molecule comprising two atoms
H₂O - water is a chemical substance wish a molecule comprising two atoms of hydrogen and one atom of oxygen

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