A. Smoke is a suspension of tiny, solid particles in a gas.

In the nucleation stage solid particles form within the liquid.

There are currently no Federal controls over such pollution, except for emissions of solid particles.

He concluded the rings comprised a myriad of small solid particles.

But we cannot add large solid particles due to main problems:

Scientists found that if solid particles were removed the water was safe to drink.

It was only when the cold breeze rose to brush his face that he realized the solid particles were ice.

These small solid particles cause the liquid to appear turbid.

With really small spaces, smaller than atoms, the common view of hard, solid "particles" turns out not to work too well.

Its solid particles are less mobile due to their inertia.