Signs of a Chemical Reaction

By: Emma Hock

Signs That Indicate a Chemical Reaction
Has Occurred

- change in odor or color (ex: burning food or faded paint)
- foaming or fizzing
- production of sound, heat or light

Definition of Reactant and Product

Reactant: A substance that participates in a chemical reaction.
Product: A completely new substance that forms from a chemical reaction.

Works Cited

- Holt Physical Science Book

All chemical changes from my video are exothermic because they release something like light or completely change their appearance .

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