TULELA: Solids (the most dense state), liquids and gases (the least dense). SUNAYANA: And looking at what’s going on according to the particle model. And we’ll be looking at how adding or ...

Students will be able to develop and explain a particle-level model to describe their observations of water dissolving salt, the water evaporating, and the salt crystals re-forming. Dissolving a solid ...

Like a box full of building blocks Imagine the inside of a solid, i.e., its molecular particle structure, as a box full of building blocks. The blocks may be stacked neatly in rows, supporting ...