Can you catch it? Can you build with it? It is a solid. Things that are solid hold a shape and size. Everything on Earth made of one of three kinds of matter: liquids, solids, and gases. In Solids, readers will learn about the properties that help identify solids. The AV2 Arabic language collection gives emerging bilingual readers access to both a printed Arabic and English book, and a bilingual ebook that provides Arabic and English translations of the text.