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| A physical change is a change in size, shape or appearance but not in substance. Some examples we witnessed were: ripping paper, flattening a ball of Play-doh, and a melting ice cube. Above we are drawing a balloon before and after it is blown up. |
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| We agreed that making chocolates from chocolate wafers was a physical change. |
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| We melted the wafers and poured it into candy molds with Halloween sprinkles. |
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| Then we chilled the chocolate until it was hard. The substance didn't change but the shape did- a physical change. |
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| We broke pretzels to show physical change then... |
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| crushed them and added milk to make a paste. Since we mixed two or more substances to make a new substance, it was a chemical change. We also examined burnt matches as an example of a chemical change. |
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