Which of the following is an example of a fossil with original preservation? a. a mold of a fish skeleton
b. a coprolite (fossilized feces)
c. a dinosaur footprint
d. an insect embedded in amber

a physical change is being made.

in a chemical reaction, the atoms and molecules produced by the reaction are called products. no new atoms are created, and no atoms are destroyed. in a chemical reaction, reactants contact each other, bonds between atoms in the reactants are broken, and atoms rearrange and form new bonds to make the products.