Question

1. how could we prove that gases are made of tiny particles?

o we could blow up a balloon.
o we could melt some ice.
o we cant prove this.
o we could pick up some of the particles in our hands.

Explanation:

Blowing up a balloon shows that gas (air in this case) occupies space and exerts pressure, which implies it is made of tiny particles. Melting ice is a phase - change of water from solid to liquid and has nothing to do with gas particles. We can't pick up gas particles by hand as they are too small. And we can prove gases are made of particles.

Answer:

We could blow up a balloon.