Question

Which of the following statements is true for gas particles?

A.
They move freely and combine with each other.

B.
They don’t move at all.

C.
They move slowly and in a structured pattern.

D.
They are constantly in motion and changing position.

Answer 1

D.They are constantly in motion and changing position.

Answer 2

I feel like B and C are obviously wrong because of the fact that we breathe and walk through air. Anyone who's taken a bath or walked through water realizes that there's a lot of resistance to moving. So by comparison we can see that air has to move out of the way and not slowly.

Now the problem between A and D is that these seem to be similar. But for A, combining with each other is wrong. Air is a fairly stable substance, if it wasn't it's be exploding on us all the time. If it was combining with each other all the time, it would be essentially undergoing a chemical reaction all the time, which it doesn't do without some catalyst to begin the reaction.

Answer 3

thanks