Which of the following scenarios is a chemical reaction NOT taking place. Bobby notices that his bike rusted when left out in the rain over night. Ann notices that the bread turned green over a long amount of time.

Timmy dissolves salt in warm water.

Betty colors her hair blond with bleach.

got to be salt in warm water as for the bread it produces mold and also bleach is a chemical

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e

if you mean hydrogen and oxygen then water is the product