For each of the following,indicate whether a physical or chemical change occurs.
a.Solid table salt is obtained from evaporation of seawater.
b.Alcohol is boiled off from rum.
c.Mercury vapor is generated by heating mercury(II)oxide.
d.Oxygen is removed from an iron oxide containing Fe₂O₃.
e.Gold metal is separated from river sand by panning.

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The Answer of For each of the following,indicate whether a physical or chemical change occurs. a.Solid table salt is obtained from evaporation of seawater. b.Alcohol is boiled off from rum. c.Mercury vapor is generated by heating mercury(II)oxide. d.Oxygen is removed from an iron oxide containing Fe₂O₃. e.Gold metal is separated from river sand by panning.

For Each of the Following,indicate Whether a Physical or Chemical