I WONDER - What Is A Gas?

Gases have molecules that are not linked, allowing them to take any shape and move freely. They can be contained in any space, spread out, and are highly energetic. Most gases are invisible.

Why can gases take any shape?

What does it mean that gas molecules aren't linked together?

How do gas molecules behave in a container?

What characteristics make gas molecules energetic?

Why are most gases considered invisible?