4/10/09
Post date: Apr 10, 2009 12:30:54 AM
Bell Activity: What is an atom?
Building blocks
Atom - the smallest unit of an element that still behaves like that element
made of protons, neutrons, and electrons
protons and neutrons at the center, make up the nucleus
electrons orbit around the nucleus
Periodic Table
Atomic number is number of protons
Atomic mass is protons + neutrons
Same number of electrons as protons
Draw the atoms of Magnesium, Iron, Aluminum, and Zinc to turn in during class.
Molecule - two or more atoms that are bonded together
Bill Nye - Atoms and Molecules