Question

Slide the lid slightly to the left (not completely off) to allow some molecules to escape. Watch the temperature. Also, observe the molecules leaving the container and the molecules that remain in the container. The temperature in the container __________. The __________ molecules are most likely to leave the container. The average speed of the molecules in the container __________.

A) Increases, lighter, decreases
B) Decreases, lighter, increases
C) Increases, heavier, increases
D) Decreases, heavier, decreases

Answer 1

When you slide the lid slightly to the left of the container, the temperature in the container decreases. The lighter molecules are most likely to leave the container, while the average speed of the remaining molecules increases.

Step-by-step explanation:

When you slide the lid slightly to the left, it allows some molecules to escape from the container. As a result, the temperature in the container decreases. The lighter molecules are most likely to leave the container because they have higher speeds. The average speed of the molecules in the container increases when some molecules escape.