Class Notes (837,174)
United States (324,890)
Chemistry (100)
CHEM 0110 (18)
All (3)
Lecture

CHEM 0110 Chapter 5

6 Pages
112 Views
Unlock Document

Department
Chemistry
Course
CHEM 0110
Professor
All Professors
Semester
Fall

Description
Chemistry Chapter 5 10/8/2012 9:50:00 PM Law of constant composition  All samples of a given element have the same proportions of their constituent elements o H2O  8:1 ratio o divide the larger amount my the smaller sample Chemical formulas  Usually list the most metallic element first  In compounds that do not have a metal, the one closest to the metals us named first  Metals on the left  Nonmetals on the right Polyatomic Ions  Act as a unit  Have a charge associated with them  Held within parenthesis Types Of Chemical Formulas  Empirical o Gives the simplest whole number ratio of atoms of element in a compound  HO (hydrogen peroxide)  Molecular o Gives the actual number of atoms of each element in a molecule of the compound  H2O2 (hydrogen peroxide)  Structural Use lines to represent chemical bonds and shows how the atoms are connected to each other  H-O-O-H Atomic elements  Atoms that exist in nature with single atoms as their basic units Molecular Elements  Do not usual exist with single atoms as their basic units  Diatomic molecules o Two of the atoms bonded together  O2, H2, Cl2  Table 5.2 in book Molecular Compounds  Compounds formed from two or more nonmetals Ionic Compounds  Contains one or more cations paired with one or more anions  Usually cations are metals and anions are nonmetals  Electron transfer=ionic  Always contain positive and negative ions  Negative charges must equal positive charges Nomenclature: Naming Compounds  System of naming compounds  Common o H2O water o H2O2 hydrogen peroxide o NH3 ammonium o CH4 methane o N2O laughing gas Naming Ionic Compounds  Formula o Metal + Nonmetal  Metal forms only one type of ion or metal that forms more than one type of ion o Some metals that form different types of ions  Chromium, iron, cobalt, copper, tin, mercury, lead o Sometimes found in transition metals  Zn and Ag have one ion  Pb and Sn multiple ions Naming Binary Ionic Compounds  Contain only two different elements  Formula o Name of cation (metal) + base name of anion-IDE Naming Binary Ionic Compounds Containing a Metal That Forms More Than One Type of Cation  Cation forms more than one ion  Formula o Name of Cation (metal) (charge of cation in roman numerals) + Base name of anion (nonmetal)+IDE  Determine the charge from the formula Naming Ionic Compounds Con
More Less

Related notes for CHEM 0110

Log In


OR

Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


OR

By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.


Submit