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Chemistry
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Which of the following is a chemical change?

Copper metal is stretched into a long wire.
Gasoline combusts in an engine.
Salt is dissolved in water.
Water is boiled on a stove.
 

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Related questions

Write balanced chemical equations to correspond to each of the following descriptions: (a) When sulfur trioxide gas reacts with water, a solution of sulfuric acid forms. b) Boron sulfide, B2S3(s), reacts violently with water to form dissolved boric acid, H3BO3, and hydrogen sulfide gas. (c) Phosphine, PH3(g), combusts in oxygen gas to form water vapor and solid tetraphosphorus decaoxide. (d) When solid mercury(II) nitrate is heated, it decomposes to form solid mercury(II) oxide, gaseous nitrogen dioxide, and oxygen. (e) Copper metal reacts with hot concentrated sulfuric acid solution to form aqueous copper(II) sulfate, sulfur dioxide gas, and water.

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Students are attempting to construct a battery in the laboratorythat will light up a light bulb. Compare the following listsprepared by students and determine which student will not be ableto successfully build a "battery" that will light up the bulb.

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