Question

lines, changing direction whenever they collide with each other or with the walls of their container. even though there is a lot of space between particles in a gas, collisions occur frequently because the particles are moving so fast.

which of the following statements are true about gas particles? select all that apply.
gas particles are always moving.
gas particles rarely collide with each other.
gas particles are tightly packed together.

Explanation:

• The passage states gas particles travel in straight lines, changing direction when colliding, meaning they are always in motion.
• The passage explicitly says collisions occur frequently, so the "rarely collide" statement is false.
• The passage notes there is a lot of space between gas particles, so they are not tightly packed, making that statement false.

Answer:

A. Gas particles are always moving.