lecture 3 - Lecture 3 ELECTRON GLUE Bonding Types 1 2 Two...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 3 ELECTRON GLUE: Bonding Types Key Idea Properties of matter depend on the types of bonds. Two simple experiments 1 Solubility in water 2 Electrical conductivity H 2 O, Al, C 12 H 22 O 111 , NaCl, SiO 2 , SiC, C 2 H 6 O, Cu, CaCl 2 , CuSO 4 YES NO Conduct? Conduct? YES YES NO NO NaCl CaCl 2 CuSO 4 H 2 O sucrose ethanol Au Al Cu SiO 2 SiC THE RESULTS 2 1 organic compounds many salts all metals diamond, silicon, boron nitride Solubility in water Models of Bonding Model 1: Ionic Magnesium gives up 2 electrons to form Mg 2+ Each chlorine atom accepts 1 electron to form Cl - MgCl 2 consists of three ions: Mg 2+ + Cl - + Cl - Cl Cl Mg magnesium atom: 2 valence electrons chlorine atom: 7 valence electrons chlorine atom: 7 valence electrons 7 + 1 = 8 !! NaCl MgCl 2 CuSO 4 MgCl 2 has a total charge of zero Ionic Crystal Lattice In a crystal, anions and cations are held together in a well-ordered structure by electrostatic forces. Coulomb’s Law:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/03/2008 for the course CHEM 1A taught by Professor Nitsche during the Fall '08 term at Berkeley.

Page1 / 2

lecture 3 - Lecture 3 ELECTRON GLUE Bonding Types 1 2 Two...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online