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Source: "Identifying Chemical Reactions in 3 Experiments." YouTube. Dadatschool, 29 Nov. 2011. Web. 30 June 2016. .
Introduction to Chemical Reactions
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Source: CK-12. "13.1 Introduction to Chemical Reactions." CK-12 Foundation. CK-12, 20 Apr. 2012. Web. 30 June 2016. .
When two or more different substances are mixed, a new substance with different properties may be formed. No matter what reaction or change in properties occurs, the total weight of the substances does not change.
A combination of different substances with different qualities.
A substances is physical material from which something is made.
An investigation is a formal inquiry or systematic study. An inquiry into questionable activities or unfamiliar things.
Source: "Chemical Changes: Crash Course Kids #19.2." Youtube. Crash Course Kids, 16 July 2015. Web. 29 June 2016. .
