+ WELCOME! 1.Organize the materials in your folder in your binder. 2.Get out your homework.

+ Chair and Trash Challenge No Detention Challenge Homework Small Business

+ Experiment

+ How does a safety pin sit on top of water?

+ 1.Intermolecular bonds are different and weaker than bonds inside molecules such as ___________, ______________, and _______________ bonds. Introduction

+ 1.Every molecule has London dispersion forces. They occur when an ________________ of one molecule randomly is attracted to the ____________ of another molecule E.g., Propane – Used to power stoves London Dispersion Forces

+ 1.When Hydrogen bonds with other ___________________ elements (N, O, and F) E.g., H 2 O Hydrogen Bonds

+ StrengthBoiling Point London Forces Hydrogen

+ 4.Ions-Ion: Occur when two ____________ molecules are attracted to each other E.g., CaCO 3 makes up eggshells 5.Ion-Dipole: Occurs when an ___________ molecule is attracted to __________molecule E.g., Salt and Water 6.Dipole-dipole: Occurs when ______ polar molecules are attracted to each other E.g., HCl – Stomach acid Hydrogen Bonds

+ 1)Determine if there is a Hydrogen Bond (N, O, F) 2)Determine if there is a polar covalent or ionic bond (If so it is either ion-ion, dipole-dipole, or ion-dipole) 3)If there is no hydrogen bond, polarity, or ionic bond, then it has London dispersion forces. Determine the Bond Type in the Atom H 2 SO 4 :

+ 1)Determine if there is a Hydrogen Bond (N, O, F) 2)Determine if there is a polar covalent or ionic bond (If so it is either ion-ion, dipole-dipole, or ion-dipole) 3)If there is no hydrogen bond, polarity, or ionic bond, then it has London dispersion forces. Determine the Bond Type in the Atom HBr:

+ 1)Determine if there is a Hydrogen Bond (N, O, F) 2)Determine if there is a polar covalent or ionic bond (If so it is either ion-ion, dipole-dipole, or ion-dipole) 3)If there is no hydrogen bond, polarity, or ionic bond, then it has London dispersion forces. Determine the Bond Type in the Atom CH 4 :

+ 1)Determine if there is a Hydrogen Bond (N, O, F) 2)Determine if there is a polar covalent or ionic bond (If so it is either ion-ion, dipole-dipole, or ion-dipole) 3)If there is no hydrogen bond, polarity, or ionic bond, then it has London dispersion forces. Determine the Bond Type in the Atom NaCl in water

+ Back to the safety pin

+ Biochemistry 50% of Chemists: 43,000-$70,000

+

+ Guided Practice Trashketball

+ Determine if the following molecules are polar or non polar HCl

+ Determine if the following molecules are polar or non polar C2H4C2H4

+ H2OH2O

+ CH 4

+ Determine what type of intermolecular bond occurs between molecules NH 4

+ Determine what type of intermolecular bond occurs between molecules HBr

+ Determine what type of intermolecular bond occurs between molecules MgS

+ Determine what type of intermolecular bond occurs between molecules NaCl in water

+ Determine what type of intermolecular bond occurs between molecules C3H8C3H8

+ What bond is the strongest?

+ What bond has the highest boiling point?

+ Independent Practice When you are done raise your hand and I will give you a POM You may not use notes on the POM NO SIDE TALK RULE APPLIES!