More polar compounds are more strongly attracted to the surface of TLC plates, and thus appear lower on the plate. Less polar compounds appear higher on the plate. Does the product appear higher or lower than the starting materials on the TLC plate

a compound is a molecule made of atoms from different elements.

a. by the combination of an unlimited number of elements

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).

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