An experiment applies heat to a substance and produces a gas that is a new and different substance. choose the true statement.
a. this represents a physical change only.
b. this represents a chemical change only.
c. this represents both a physical and a chemical change.
d. this represents neither a physical change nor a chemical change.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

2b2t

explanation:

2b2t