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Chemistry I Class: Physical and Chemical Changes Lab

By Coonrod, Claire

September 06, 2019


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Student's in my Chemistry I class have been discussing how physical changes differ from chemical changes. Physical changes involve a change of one or more physical properties. Chemical changes involve changes in the composition of the substance. The following are clues that indicate that a chemical change may have occurred: a color change, the evolution of bubbles, the formation of a solid, and heat absorbed or produced. Chemistry I students recently carried out four lab procedures and made observations about each one. They then had to use the clues listed above to determine if a chemical reaction occurred.