THE BOOKSTORE NOW HAS CLICKERS!

1
Announcements

• THE BOOKSTORE NOW HAS CLICKERS!
• CHAPTERS 1 2 POSTED ON COURSE WEBSITE
• HOMEWORK- CHAPTER 2 NOW POSTED, DUE 9/6
• NOTE-TAKER REQUEST
• DONT FORGET
• LAB THIS WEEK- PRINT EXPERIMENTS, DO PRE-LAB
• CHEMISTRY HELP CENTER- GRAPHING ASSIGNMENT

2
Groups with Names
3
Periodic Table
4
Where are we going from here?
5
Element Structures
6
Element Structures- Allotropes
7
Element Structures- Sulfur Allotropes
8
Where are we going from here?
9
Covalent Compounds

• Atoms of different elements held together by
  covalent bonds
• Molecular covalent- individual molecules
• Network covalent- large network of atoms

Graphene resting on a silicon dioxide substrate
layer
10
Molecular Covalent Compounds

• nonmetal nonmetal molecular compound
• C O CO, CO2
• S H H2S
• C H CH4

11
Types of Formulas
12
Examples

• GLUCOSE
• ACETIC ACID

13
Naming Molecular Compounds

• Binary compounds- 2 different elements
• Name first element, using full name
• Name second element, adding ide
• Use prefixes to indicate of atoms
• Only use prefix for first name if gt1 atom
• Always use prefix for second element
• Examples
• CO
• N2O
• BF3

Prefix
1 mono-
2 di-
3 tri-
4 tetra-
5 penta-
6 hexa-
7 hepta-
8 octa-
9 nona-
10 deca-
Exception Some materials have common names (e.g.
H2Owater, NH3ammonia)
14
Where are we going from here?