Frostburg State University
General Chemistry Online: Ten Signs of Chemical Change
Resource provides the ten signs that tell when a chemical change has occured. Each sign has a detailed explanation.
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The Science House: Dancing Spaghetti
The chemical change of matter is illustrated in this lab experiment when spaghetti is placed in a solution of baking soda and vinegar. Watch the spaghetti rise to the surface and sink again once the gas is released.
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The Science House: Combustion
In this experiment, students will observe that the weight of the product of combustion is greater than that of the starting material. Teacher's notes address the key concepts of this experiment.