Answer :
John Dalton proved that all matter is made of elements.
Who is John Dalton?
John Dalton was an English scientist who lived between the period of 1766 and 1844. His work proved that matter is composed of an indivisible small particle called an atom.
Hence, John Dalton proved that all matter is made of elements.
Learn more about John Dalton here: https://brainly.com/question/12555971
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