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October 24, 2014

Homework Help: Science

Posted by Anonymous on Tuesday, August 2, 2011 at 10:36pm.

Hydrochloric acid and sodium hydroxide are mixed together to form salt and water. During the reaction, the temperature of the solution increases. Which of these best explains why this is considered to be a chemical change?

No energy was destroyed.

Heat was given off.

It involved liquids.

New substances formed.

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