Learning Target: Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.

Must Do: Use the handout (Common Ions) to make flashcards of all the “ate”

ions (for example nitrate). One one side of the card, write the chemical name. On the opposite side, write the molecular formula,

including the charge (for example NO3-)

10th Grade Chemistry: 1/27/14

Agenda:•Must Do•WWK•Brief Lesson/video•iPad Chem Mahjong

Cartoon dry spell.

WsWK

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Catalyze/Catalystcatalyst

noun    (Concise Encyclopedia)

Any substance of which a small proportion notably affects the reaction rate of a chemical reaction without itself being changed or consumed

Examples?

Goal for this unitWrite a complete and balanced chemical

equation from a prompt Example: Write the chemical equation for the

reaction of Aluminum with potassium perchlorate.Balance the reaction Identify the type of reaction

Al + KClO4 Al O + KCl

How do we get there?Memorize some polyatomic ion formulas

Memorizing the Polyatomic ion formulas

Memorize as little as possible at first (they’re become second nature…eventually)

Memorize the –ates

Then recognize the pattern

Hypochlorite

Chlorite Chlorate Perchlorate

Hypo Minus one oxygen ClO3

- Hyper

Under or LowClO2

- Over

ClO2-

Other ions Phosphate is PO4

3-

Phosphite?

Perphosphate?

Oxide is O2-

Peroxide?

Nitrate is?

Nitrite is?

Reaction ClassificationFive Types or Reactions (VIDEO)

Synthesis

Decomposition

Single Replacement

Double Replacement

Combustion

Chem Mahjong!I’ve loaded the Chem Mahjong app on all the

iPads I know that sounds pretty nerdy, but it’s kind of

funHigh score gets bragging rights…maybe some

chocolate.The one to play is the polyatomic ions in x-board

format.The goal is to help you to memorize the formulas

in a way that isn’t as painful, and dreadfully boring as flash cards.