Which statements correctly defend or dispute his conclusion?
Henry mixed salt and water together in a cup until he
observed a clear solution. He measured the mass of
the solution. Then he placed the cup outside for
several sunny days during the summer. After a week,
he observed that only solid salt remained in the cup
and the mass had decreased. Henry concluded that a
physical and chemical change occurred in this
investigation
He is correct. Dissolving salt in water is a physical
change, but evaporating the water is a chemical
change Formation of a solid is evidence that a
chemical change occurred.
He is correct Evaporation is a physical change, but
dissolving salt in water is a chemical change The
change in mass is evidence that a chemical change
occurred
He is incorrect. Dissolving salt in water and
evaporation of the water are both physical changes.
The reappearance of salt is evidence that the
change was reversible by a physical change, so it
could not be a chemical change.
O He is incorrect. Dissolving salt in water and
evaporation of the water are both chemical
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