The picture below shows a chemistry experiment. Which statement best describes steps of this experiment?
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1 point
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Step one contains a compound, which is chemically combined in step two, forming a mixture in step three.
Step one contains a compound, which is physically combined in step two, forming a mixture in step three.
Step one contains one element, which is physically changed in step two, forming a new compound in step three.
Step one contains a mixture of elements, which are chemically combined in step two, forming a new compound in step three.