Which of the following so not an indication of a chemical change? gas production, energy transfer, fracture formation, precipitate information

The correct answer is fracture formation.

Fracture formation is  not an indication of a chemical change.

Gas production, energy transfer are Precipitate information indications of a chemical change.

A chemical change is an irreversible process wherein there are rearrangements of the atoms in the molecules of a compound, resulting in the formation of a new compound with new chemical properties or composition.

A fracture is a fault line that divides rocks into two or more pieces. A fracture is a geological formation. Fracture is most often seen as crevice or deep fissures in rocks.  

The option C is the correct option.

Explanation:

Chemical change is described as reaction that involves the reaction between two or more atom which can be combination of atoms or break down of bonds in atoms.

Gas production, precipitate formation and energy transfer somehow involves the reaction between atoms (chemical change).

But in case of fracture formation which is a rupture in a rock or bone does not involve a chemical change.

alkaline metals are lithium, sodium, rubidium, potassium, cesium and francium.

alkali metals have electronegativity from 0.7 to 1, lowest in periodic table of elements, which means that alkali metals (i group in periodic table) has positive oxidation number in compounds.

electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

alkaline metals (far left in main group) have lowest ionizations energy and easy remove valence electrons,

for example, potassium is the alkali metal and has a single valence electron in the outer electron shell.

electron configuration of potassium is: ₁₉k 1s²2s²2p⁶3s²3p⁶4s¹.

they can not exist alone in nature, because they are very reactive.