Catalyst

CatalystHow did Bohrs atomic model improve on previously proposed models?Draw the Bohr model for the ion magnesium would form after satisfying the octet rule.What differentiates covalent and ionic bonds?

End

To Do List: ChecklistsHelp Astor do big thangs w/ Gen ChemGet that book!Activities Checklist:Finish practicePrepare for stations and examEvaluate Gen Chem workFinish ReadingFinish Naming Practice

What Do We Know?

Naming CompoundsElements combine in various ways to form compounds. Chemists generally divide compounds into two classes: ionic and covalent.Each class has a unique nomenclature system

IonsAn ion is an atom that has lost or gained electrons and therefore has a positive or negative charge due to an imbalance of protons and electrons.A polyatomic ion is a group of atoms bonded together as a single unit that carries a net charge.

The Periodic TableTells us everything!Each element in the the same group should share properties with other elements in its group because.

Which elements are in your smartphone?

http://singularityhub.com/2014/09/16/know-what-chemical-elements-are-inside-your-smartphone-a-good-chunk-of-the-periodic-table/7Organic vs. InorganicWhich of the substances shown below would YOU consider organic? WHY?

ABCDEOrganic isnt just in a SupermarketITS CHEMISTRY!http://chemistry.about.com/od/branchesofchemistry/f/What-Is-The-Difference-Between-Organic-And-Inorganic.htm9Read about ithttp://www.shmoop.com/biomolecules/organic-inorganic-molecules.htmlhttp://chemistry.about.com/od/branchesofchemistry/f/What-Is-The-Difference-Between-Organic-And-Inorganic.htmhttp://www.kentchemistry.com/links/organic/combustion.htm

How are organic compounds involved in combustion?My 3 favorite molecules! What are they?

Caffeine - 1,3,7-trimethylxanthine

Theobromine - 3,7-dimethyl-1H-purine-2,6-dione

Capsaicin - 8-methyl-N-vanillyl-6-nonenamide

[1] http://blogs.plos.org/speakeasyscience/2012/02/14/the-curious-toxic-chemistry-of-chocolate/

[2] http://science.howstuffworks.com/life/chocolate-high1.htm11

Lesson 2.6 Naming Organic and Inorganic Compounds

Naming Inorganic Compounds

Names and Formulas of Ionic Compounds: AnionsThe names of elements that are anions are formed by adding ide to the end of the nameCl- = Chloride ionBr- = Bromide ionO2- = Oxide ion

Names and Formulas of Ionic Compounds: Anions2. Polyatomic ions that contain oxygen have names ending in either ate or ite

-ate ending polyatomic have more oxygens than ite ones!Sodium Nitrate and Nitrite are preservatives that are put in meat to keep them looking red since all the myoglobin is gone. Theyre still perfectly fine to eat, but our brains tell us they look nasty if they dont have that delicious red color.18Names and Formulas of Ionic Compounds: Anions2. Sometimes oxygen binds to the same ion with increasing amount of oxygens. These come in 4s and the pattern is always:Per_____ate = 4 oxygens_______ate = 3 oxygens_______ite = 2 oxygensHypo______ite = 1 oxygenExample:ClO4- = Perchlorate, ClO3- = Chlorate, ClO2- = Chlorite, ClO- = Hypochlorite Names and Formulas of Ionic Compounds: Anions3. Anions created by adding H+ to an anions that has oxygen has the prefix of hydrogen or dihydrogen based on the number of H+.

Naming Ionic CompoundsTo name ionic compounds, you always name the cation and then the anion.

Examples

Names and Formulas for AcidsAcids are named differently than other compoundsTwo rules when naming acids:Acids containing anions that are only single elements are named by changing the ide prefix on the anion to ic and adding hydro in front of the anion. Add acid at the end.E.g. HCl is hydrochloric acidAcids containing polyatomic ions are named by changing ate to ic and ite to ous on the anion and then adding acid at the endNaming Covalent Molecules (Non-Acids)The process for naming covalent inorganic compounds requires the following rules:1. Name the first compound with a Greek prefix to indicate the number of atoms.2. Name the second compound adding ide to the end and a Greek prefix to indicate number of atoms.PrefixMeaningMono-1Di-2Tri-3Tetra-4Penta-5Hexa-6Hepta-7Octa-8Nona-9Deca-10Greek Prefixes

Class ExampleCaCl2Ba(OH)2SiBr4Hydrobromic Acid

Table TalkHClK2SO4Disulfur dichlorideCobalt (II) Nitrate

White Board ProblemsNa2CO3CaOMg(ClO3)2Lead (II) HydroxidePhosphoric AcidH2SO4S2F6CO2Diphosphorus trifluorideNaming Simple Organic Compounds

Naming Hydrocarbons

Unit 2 Problem SetComplete the problem set independently or with your table.

Closing TimeQuantitative on Ch. 2 on Thursday/FridayAnswer to practice