can someone who is really good at chemistry help me please??? Here is my gm ail: gracelbennett11 at gm ail. com

be careful with sharing ur gm ail u never know what type of person will see this

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

tracks, burrows, eggshells, nests, tooth marks, or gastroliths