Question

order the following from hottest to coldest. a b c d four diagrams of particle motion options: abcd, adcb, abdc, cdba

Explanation:

Step1: Recall Kinetic Theory

In the kinetic theory of matter, the temperature of a substance is related to the average kinetic energy of its particles. Higher temperature means particles have more kinetic energy, so they move faster (longer arrows or more vigorous motion), and lower temperature means slower movement (shorter arrows or less vigorous motion).

Step2: Analyze Particle Motion

• Container C: Particles have the longest arrows, meaning they move the fastest. So C is the hottest.
• Container D: Particles have longer arrows than A and B, so D is next.
• Container B: Particles have shorter arrows than D, so B is next.
• Container A: Particles have the shortest arrows (or least vigorous motion), so A is the coldest.

Wait, no, wait. Wait, let's re - examine. Wait, maybe I mixed up. Wait, the length of the arrows: C has the longest arrows, then D, then B, then A? Wait, no, the options are CDBA? Wait, let's check the options. The options are ABCD, ADCB, ABDC, CDBA.

Wait, let's look at the particle motion:

• In C, the arrows are the longest, so highest kinetic energy (hottest).
• Then D: arrows are longer than A and B.
• Then B: arrows are longer than A.
• Then A: shortest arrows (coldest).

So the order from hottest to coldest is C, D, B, A → CDBA.

Answer:

D. CDBA