Here’s the correct matching of examples with each sign of a chemical reaction:
- Production of heat and light: using a propane heater in deer blind
- Formation of a gas (bubbles): vinegar and baking soda foaming like a volcano
- Color change: a banana ripening
- Odor change: cookies baking in the oven
- Formation of a precipitate: the formation of solid lead iodide from sodium iodide and lead nitrate
The option that will not be used is the phase change of liquid water to steam.