Which statement describes a chemical change? 1. alcohol evaporates. 2. water vapor forms snowflakes. 3. table salt (nacl) is crushed into powder. 4. glucose (c6h12o6) and oxygen produce co2 and h2o.

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).