In this scenario, the indication of a chemical reaction is primarily the formation of a new gas. The appearance of gas rising from the spot where the liquid touches the metal suggests that a chemical reaction is occurring, likely involving the release of gas as a product. The hissing sound and any temperature changes may accompany the reaction, but the formation of a new substance (the gas) is a strong indicator of a chemical reaction taking place.
You drip a liquid substance onto a metal plate. You hear a hiss, and see a gas rising from the spot where the liquid touches the metal plate.
What indicates a chemical reaction in this scenario?
Responses
the liquid being in contact with a metal
the liquid being in contact with a metal
the hissing sound as the liquid touches the metal
the hissing sound as the liquid touches the metal
the decrease in temperature as the liquid touches the metal
the decrease in temperature as the liquid touches the metal
the formation of a new gas
1 answer
1 answer