The Atom. Two major parts of an atom Nucleus (not to scale) Electron Cloud.
Atoms and the Periodic Table The Atom Ch. 4. Democritus (400 BC) Greek philosopher. All things are composed of tiny, indivisible particles: called: Atomos.
Quizzes and Exams
BIOLOGICAL CHEMISTRY Microbiology – Chapter 2. Interactive Notebook: Left Side What is an atom? What is an element? What is the name of the table that.
Chapter 2: Matter and Minerals. What is Matter? Matter – the substance of which any physical object is composed States of Matter: Solid Liquid Gas Controlling.
Matter- Atoms, Elements and Compounds… and You!! Thanx to L. DaVinci.
Microbiology – Chapter 2
Chapter 2 Chemistry of Life. Nature of Matter MATTER is anything that occupies space and has mass atom, element, molecule, compound.
BIOLOGICAL CHEMISTRY Microbiology – Chapter 2. Do Now What is an atom? What is an element? What is the name of the table that keeps track of all the elements?
The Mole Unit 3 The Mole So far we have been dealing with numbers on the atomic scale… –Atomic Number = # of protons –Mass Number = # of protons + #
October 29 th, 2015 Start Atomic Structure & Periodic Table Bell Ringer Get homework out on your desk.
Atoms and Elements