Objective: We will review taxonomy and learn to name acids and bases.

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Presentation transcript:

Objective: We will review taxonomy and learn to name acids and bases. Date: March 22, 2010 Objective: We will review taxonomy and learn to name acids and bases. Do Now: Reflect on how great Spring Break was

TAKS Review: Taxonomy

Classification the grouping of information or objects based on Taxonomy is the science of grouping and naming organisms. Classification the grouping of information or objects based on similarities.

We only know about a fraction of the organisms that exist or have existed on Earth. Taxonomists give a unique scientific name to each species they know about whether it’s alive today or extinct. The scientific name comes from one of two “dead” languages – Latin or ancient Greek. Why use a dead language?

Devil Cat

Ghost Cat

Mountain Lion

Screaming Cat

Puma

Florida Panther

Cougar

There are at least 50 common names for the animal shown on the previous 7 slides. Common names vary according to region. Soooo……why use a scientific name?

Binomial Nomenclature a two name system for writing scientific names. The genus name is written first (always Capitalized). The species name is written second (never capitalized). Both words are italicized if typed or underlined if hand written. Example: Felis concolor or F. concolor Which is the genus? The species?

A group at any level is a taxon. The major classification levels, from most general to most specific (several of these have subdivisions) A group at any level is a taxon.

Categories within Kingdoms Kingdoms are divided into groups called phyla Phyla are subdivided into classes Classes are subdivided into orders Orders are subdivided into families Families are divided into genera Genera contain closely related species Species is unique Categories within Kingdoms

Chemistry Acids and bases

What exactly is an acid? An acid is What exactly is a base? An base is

The 3 Types of Acids Arrhenius Acid donates an H+ ion Arrhenius Base donates an OH- ion Ex: HCl  H+ + Cl- NaOH  Na+ + OH- Bronsted-Lowry acid donates an H+ ion A Bronsted-Lowry base accepts an H+ ion Ex: HCl + H2O  H3O+ + Cl-

Lewis Acid accepts an electron pair A Lewis Base donates and electron pair BF3 + F-  BF4-