States of matter
In lessons 1–2 we saw that molecules exist, move, and cause diffusion. Now — three states of matter: the same substance can be solid, liquid, or gaseous depending on how free the molecules are.
In lessons 1–2 we saw that molecules exist, move, and cause diffusion. Now — three states of matter: the same substance can be solid, liquid, or gaseous depending on how free the molecules are.