The Atom. Two major parts of an atom Nucleus (not to scale) Electron Cloud.
Composition of Matter. What is Matter? Anything that has mass and takes up space Two categories: Substances Mixtures.
Chapter 2: The Chemistry of Life. Basic Chemistry ATOM: The basic building block of all matter; the smallest particle of an element that still retains.
Atoms and Elements
Let’s review what we know already!
Atomic Theory and Structure Chapters 4-5 Atomic Theories Democritus ~ 400 BC believed that atoms were indivisible and indestructible Dalton ~ 1800’s.
