1. Periodic Table of Elements

2. Elements are types of atoms!
Elements can not be broken down into simpler substances.
Everything is made of matter = atoms.

3. What do atoms look like? Protons (+) Neutrons Electrons (-)
Positive charge
Located in the nucleus
The number of protons = the signature of the atom.
Neutrons
No charge
Electrons (-)
Negative charge
Located in the electron cloud (electron orbitals)
2, 8, 18, 36
Super small compared to protons and neutrons.

4. What makes one type of atom different from another?

5. What does the periodic table tell you?
Atomic Number = Number of Protons
Tells what type of atom you have.
Tells the number of electrons in an electrically neutral atom.
Atomic Mass = # of protons + # of neutrons
Mass of nucleus

6. Protons = ____________ Neutrons= ___________ Electrons =___________ Draw the Bohr Model

7. Protons = ___________ Neutrons = __________ Electrons = ___________ Draw the Bohr Model