What’s
Composed of different types of molecules

Explanation:

Most often, the term “molecules” refers to multiple atoms; a molecule may be composed of a single chemical element, as with oxygen (O2), or of multiple elements, such as water (H2O). Molecules are neutral and carry no charge; this property distinguishes them from polyatomic ions, such as nitrate (NO3–).

clouds form

solid ice forms on leaves.

water droplets form on grass.