The change in matter in which chemical bonds are broken, rearranged, and reformed is called a a. chemical equation b. chemical formula c. chemical reaction d. chemical compound

Option C, Chemical reaction

Explanation:

In a chemical reaction, either two or more chemical substances combine to produce a new chemical compound or a large chemical molecule breaks down to produce smaller units.  

In both the cases, the molecular structure of the reactant is reoriented to produce a new substance.  

For example –  

Fe(s) + S(s) → FeS(s)

Iron combines with sulfur to produce iron sulfide. In this reaction, the atoms with in the two elements i.e iron and sulfur, re-oriented and combined to form chemical bonds and hence produces a compound.  

Hence, option C is correct

i think the answer is gold im not entirely sure

it cools slower in the earth meaning the crystals have more time to form than lava on the surface