Has a chemical reaction taken place? Yes
No
1. Water solidifies into ice on a cold day.
Yes
No
2. A glow stick emits light when it is broken.
3. When two liquids are mixed, a blue solid forms at the
bottom
Yes
No
Yes
No
4. Condensation forms on a glass on a hot day.
5. Bubbles form when vinegar and baking soda are mixed
together.
Yes
No
Yes
No
6. Ice cream melts in the sunshine.
7. A glass jar feels warm after two cold substances are
mixed together
Yes
No
8. Carbon dioxide is produced when fungi feed on sugar.
Yes
No
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