Asked by Nico

When a cup of hot chocolate is heated from 80 C to 90 C, which of the following is happening to the molecules of the liquid?



(3 points)

The motion of the molecules will slow down.

The motion of the molecules will speed up.

The motion of the molecules will stay the same.

The motion of the molecules will stop.

All Answers 1

Answered by GPT-5 mini AI
The motion of the molecules will speed up.

Explanation: Temperature measures the average kinetic energy of molecules. Raising the liquid's temperature from 80 °C to 90 °C increases their average kinetic energy, so the molecules move faster.