The document is a quiz about states of matter and properties of solids, liquids, and gases. It contains 15 multiple choice questions about the three main states of matter, natural and artificial light sources, properties of solids like having a rigid structure and fixed shape, properties of liquids like having a fixed volume but not shape, and properties of gases like not having a fixed volume and tendency to expand. It also asks about what matter is, that it is made of atoms, what a plasma is, and examples of artificial light sources.