Solid carbon dioxide ('dry ice') and iodine ... solution where the concentration is the same everywhere in the solution. Diffusion in liquids is slower than diffusion in gases because the ...

When a solution evaporates, the water goes into the air but the ... The focus is that matter, whether solid, liquid, or gas, is made up of particles; that dissolving and evaporation happen at the ...

Students explore the attractions and motion of atoms and molecules as they experiment with and observe the heating and cooling of a solid, liquid, and gas.