A chef in a restaurant is cooking 2 different desserts in the kitchen. He removes an apple pie and some chocolate chip cookies at the same time. The smell of cookies reaches you a minute before you smell the pie. What might cause the odor particles to reach you at different times?

desserts in the kitchen. He removes an apple pie and some chocolate chip cookies at the same time. The smell of cookies reaches you a minute before you smell the pie. What might cause the odor particles

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

56 moles of   lieter in chemistry