1. ionic - iron (II) chloride2. ionic -lead (II) oxide3. ionic - copper (I)

chromate4. covalent- carbon dioxide5. covalent- diphosphorous

pentoxide6. covalent- silicon dioxide7. ionic – iron (II) oxide8. ionic – sodium chloride9. covalent – carbon

tetrachloride10.ionic – sodium

hydroxide

Quiz 2/9/05

1. FeCl2

2. PbO

3. Cu2CrO4

4. CO2

5. P2O5

6. SiO2

7. FeO8. NaCl

9. CCl4

10. NaOH

Fe? Cl1-

Pb?O2-

O2-

Cl1-

Co?

CrO42-

CrO42-

Co?

CrO42-

Name all of the following

CO2

covalent

carbon dioxide

FeCl2

ionic

iron (II) chloride

Electronegativity: the relative tendency of an atom to attract electrons to itself when participating in a chemical bond.

• Most bonds have some ionic character.• If more than 50% of the time one ion has

possession of the electron, the compound is considered ionic.

• This means that if the difference in electronegativity is greater than 1.67, the compound is considered ionic.

• The more ionic a bond, the more easily a solution of the compound will conduct electricity.

• Electricity is defined as the flow of electrons.• Do pre-lab for lab 21 We will do the lab on

Thursday.

Naming Organic Compounds

• Organic compounds have one or more carbons, surrounded with hydrogens.

• They may have double or triple bonds, and may include oxygen, or other atoms.

• They are named by counting the “carbon backbone” and applying a prefix

• “Functional Groups” provide the rest of the name.

meth = 1eth = 2prop = 3but = 4pent = 5hex = 6hept = 7oct = 8non = 9…

Naming Organic Compounds

• Butane = 4 carbons

• CH3CH2CH2CH3

• Heptane = 7 carbons

• CH3CH2CH2CH2CH2CH2CH3

• Octane = 8 carbons

• CH3CH2CH2CH2CH2CH2CH2CH3

meth = 1eth = 2prop = 3but = 4pent = 5hex = 6hept = 7oct = 8non = 9…

13 c page 178

3 carbon atoms

6 hydrogen atoms

13 f page 178

6 carbon atoms

12 hydrogen atoms

http://jchemed.chem.wisc.edu/JCESoft/CCA/CCA5/MAIN/1ORGANIC/ORG02/TRAM02/E/NOMOVIE/MISC.HTM

Molecular and Empirical Formulas.• Molecular: adj. Pertaining to, consisting of,

caused by, or existing between molecules.

• Empirical: adj. 1. Relying upon or derived from observation or experiment. 2. Guided by practical experience and not theory, especially in medicine.

• Formula: n 1. an established form of words for use in a ceremony or procedure. 3. Chemistry: a. a symbolic representation of the composition or of the composition and structure of a chemical compound. b. The chemical compound so represented. c. A prescription in exact proportion: recipe.

Molecular and Empirical Formulas

• C6H12O6

• H2O2

• Hg2I2

• C6H14

CH2O

HOHgIC2H7

Coefficients: How many sets of a particular compound/element• 2 C6H12

Coefficients: How many sets of a particular compound/element• 5 C6H12