Question

Wax melts when it is heated. Which most likely describes what is true of the result of this reaction?

Answer 1

melting of wax is a physical reaction, because the same amount of wax exists before and after the change.

• physical reaction is a change from one state (solid or liquid or gas) to another without a changing  in the  chemical composition.
• It alters the form, shape or appearance of a material but does not convert  the material into a new substance. examples Freezing Water, Sanding a piece of paper, Bending a paper clip, Mixing oil and vinegar  etc
• both  physical and chemical changes obey the law of conservation . It also entails that the mass of a substance present before a reaction should be equal to the mass obtained after the reaction.

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