Question

At high temperatures, what does dissociation of molecule mean?

(a) Atoms break away from molecular structure

(b) Electrons break away from the atom

(c) Protons and neutrons break away

(d) Electrons jump to the higher energy state

I had been asked this question in unit test.

Asked question is from Microscopic Description of Gases in division Properties of High Temperature Gases of Aerodynamics

Answer 1

Right answer is (a) Atoms break away from molecular structure

Easiest explanation: At higher temperature molecules dissociate or ionize depending on the temperature range. Dissociation is a process where the atoms which are a part of the molecule break away from the molecular structure. This leads to the gas becoming highly chemically reactive.