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Indicators of Chemical Change. How can we observe these reactions?. Bubbles Change in color Fizzing Change in state Change in temperature. Elements. Can not be broken down into a simpler type of matter. Compounds. Are made of two or more elements bound together.
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How can we observe these reactions? • Bubbles • Change in color • Fizzing • Change in state • Change in temperature
Elements • Can not be broken down into a simpler type of matter.
Compounds • Are made of two or more elements bound together. • Can only be seperated, or broken down, by chemical change.
Mixtures • Are made of two or more elements. • These elements can usually be seperated again by physical changes.