Atoms and Molecules and Kinetic Energy

All matter is made of molecules, which are made of atoms. They are everywhere. The air you breathe, the clothes you are wearing, the food you just ate, these things are all made of atoms and molecules. Atoms and Molecules are always moving. When they are heated (as you already know) they start moving faster and getting lighter. If an object is a solid liquid or gas, depends on how fast the molecules are moving. The movement of the atoms is called Kinetic Energy. An objects kinetic energy is how fast the molecules inside it are moving.