The shells of marine organisms contain CaCO3 , largely in the crystalline form known as calcite. There is a second crystalline form of CaCO3 known as aragonite. a. Based on the thermodynamic and physical properties given for these two crystalline forms, would you expect calcite in nature to convert

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

i think slash and

2b2t

explanation:

2b2t