1.ionic - iron (II) chloride 2.ionic -lead (II) oxide 3.ionic - copper (I) chromate 4.covalent- carbon dioxide 5.covalent- diphosphorous pentoxide 6.covalent- silicon dioxide 7.ionic – iron (II) oxide 8.ionic – sodium chloride 9.covalent – carbon tetrachloride 10.ionic – sodium hydroxide Quiz 2/9/05 1.FeCl 2 2.PbO 3.Cu 2 CrO 4 4.CO 2 5.P 2 O 5 6.SiO 2 7.FeO 8.NaCl 9.CCl 4 10.NaOH Fe ? Cl 1- Pb ? O 2- Cl 1- Co ? CrO 4 2- Co ? CrO 4 2- Name all of the following

CO 2 covalent carbon dioxide

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

Naming Organic Compounds Butane = 4 carbons CH 3 CH 2 CH 2 CH 3 Heptane = 7 carbons CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 Octane = 8 carbons CH 3 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 meth = 1 eth = 2 prop = 3 but = 4 pent = 5 hex = 6 hept = 7 oct = 8 non = 9 …

13 c page carbon atoms 6 hydrogen atoms

13 f page carbon atoms 12 hydrogen atoms

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 C 6 H 12 O 6 H 2 O 2 Hg 2 I 2 C 6 H 14 CH 2 O HO HgI C2H7C2H7

Coefficients: How many sets of a particular compound/element 2 C 6 H 12

Coefficients: How many sets of a particular compound/element 5 C 6 H 12