Chemical Change and Physical Change Worksheet Help?

Posted on 2015-09-03 06:08:00 in Chemistry by DAISY

Word Bank: one, compounds, heat, elements, composition, new, exothermoc.
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Words can be used more than once.
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A chemical chnage resulgs in one or more substances of entirely different composition from the original substances. The ______ and/or _______ at the start of the reaction are rearranged into ________ product compounds or elements. A chemical change alters the ______ of original matter. Examples of chemical chnagees would be teh reaction of iron with air (also know as rusting) or the reaction of a metal with acid. Ther are certain observations that indicate a chemical chnage has occured. For example. The reaction would produce a chnage in tempreture. Reactions that produce______ are known as exothermic reactions and reactions that asorb heat are known as endothermic reactions. other observations include the _______ of a gas or the ______ of a solid.

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