What is it called if a substance is formed by the neutralization of acid and alkali? if u help me i will mark u as Brainliest

What is the force of attraction between the particles in a salt crystal

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.

Which is an example of a reversible physical change?