Items needed today: Signed progress report (turn in to box) Choose your favorite color marker Pen or pencil Periodic Table

6th Period 10 seconds – decide what flavor cupcake you would enjoy eating.

Unit 2 Test: Measurements DA and Density Review for those below a 75

ISOTOPES OF CARBON 6 Neutrons 8 Neutrons Carbon-12 Mass Number = 12 Hyphen Notation ↓ Carbon-12 Mass Number = 12 Atomic Number = 6 Neutrons = Mass – Protons Carbon-14 Mass Number = 14 Atomic Number = 6 Neutrons = Mass - Protons 6 Neutrons 8 Neutrons Protons Neutrons

Element At # M # # P+ # N0 # e- s/s method Hyphen method scandium 45Sc

What are the parts of the periodic table? Group Period

Review of the Periodic Table Metals are found on the left of the zig zag line. Nonmetals are found on the _right_ of the zig zag line.

Metals Conductors Lose electrons Malleable and ductile Shiny, malleable, ductile (drawn into wires), good, usually solids

Nonmetals Brittle, not shiny Gain electrons Covalent bonds Poor conductors, usually gases or liquids

Metalloids

Alkali Metals

Alkaline Earth Metals

Transition metals

Halogens

Noble Gases (Inert Gases)

Biochemistry WS

Group Number, Valance Electrons, & Oxidation Numbers 1 2 13 14 15 16 17 18 Valance Electrons 3 4 5 6 7 8 He-2 Oxidation Number (charge) +1 +2 +3 ±4 -3 -2 -1

Atom Building Game

Reminders Return marker HW: Atom Building Activity (if not finished in class)