The chemical properties of a substance can only be observed when it is changed into a different substance t f

Is it true

Explanation:

A chemical property of a substance is evident when it undergoes into a chemical change (that means change into a different substance), because can release or absrob heat, can be visible by some bubble, change in color, etc.

Some examples of chemical properties are the reactivity of a substance, the toxicity, the flammability, the heat of combustion among others.

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).