⚗️ Chemistry
3 Thinkapedia articles — short, clear answers written for kids, each with a quick quiz.
⚛️What Is an Atom?An atom is a tiny building block of matter. Everything around you — air, water, your body — is made of atoms.🧪What Is pH?pH tells how acidic or basic a liquid is, on a scale from 0 to 14. Pure water is 7, which is neutral.🧂Element or Compound — What’s the Difference?An element is made of just one kind of atom. A compound is made of two or more kinds of atoms joined together.