Classify the following chemical reaction
3 C + 4H2→ C3 H8

Synthesis Reaction

General Formulas and Concepts:

Synthesis Reactions: A + B → AB

Decomposition Reactions: AB → A + B

Single-Replacement Reactions: A + BC → AB + C

Double-Replacement Reactions: AB + CD → AD + BC

Explanation:

Step 1: RxN

3C (s) + 4H₂ (g) → C₃H₈ (s)

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).