10/05/2015

 Please write down these vocabulary words (if you have not done so yet) and define them from discovery education  Product Limiting Reactant  Reactant Excess Reactant  Coefficient  Chemical Equation  Synthesis  Decomposition  Combustion  Single Replacement  Double Replacement

 Review:  Subscripts  The specific number of atoms  Superscripts  charges on ions  Coefficients  Number of Molecules present in a chemical formula

 Chemical Reactions: Cause atoms of the same or different elements to rearrange to form a new substance or substances

 Predicting the reactions that occur when two substances are put together  Product- the substances that are formed during a chemical reactions  Arrows point toward the product  Reactant- the substances present before a chemical reaction occurs  Arrow points away from the reactants

 Limiting Reactant - The reactant in a chemical reaction that limits the amount of product that can be formed.  The reaction will stop when all of the limiting reactant is consumed.  Excess Reactant - The reactant in a chemical reaction that remains when a reaction stops when the limiting reactant is completely consumed.  The excess reactant remains because there is nothing with which it can react.

SymbolsMeaning (s)Solid (l)Liquid (g)Gas (aq)In aqueous solution (dissolve d in water) SymbolMeaning “produces” or “yields” indicating result of reaction Reaction in which products can reform into reactants; final result is a mixture of products and reactants

 1) Synthesis  2) Decomposition  3) Combustion  4) Single Replacement  5) Double Replacement

 Synthesis- “Love at first sight”  Decomposition- “The big break-up”  Single Replacement- “My best friends girlfriend”  Double Replacement- “Revenge”  Combustion- “The player”

Hey Harry Hey Sally Basic equation: A+B AB

The compound produced is larger and more complex than the reactants Example: CO H 2 O C 6 H 12 O O 2

But, baby I love you We are Through Basic Equation: AB A+B

The Breakdown of a larger compoundThe Breakdown of a larger compound Example: 2 H 2 O 2 H 2 + O 2 I am so over you

Hey, How you doing? Oh Pierre! Mark Im leaving you Basic Eqn: AB + C BC + A This Stinks!

“Free” element must be the more reactive element for a reaction to occur ( Pierre is more suave then Mark) Example: 2 K + 2 HCl 2KCl + H 2

Basic Eqn: AB + CD AD + BC Pierre, Im sick of you Chloe was my one true love, but Marks girl is looking pretty Hot. I have to get Pierre back. Hey Chloe do you want to go out Ok I can’t believe Chloe would do that

Always involves the formation of a molecular compound such as water (Tears) and either a precipitate or a gas Ex: 2 KI (aq) + Pb(NO 3 ) 2(aq) PbI 2(s) + 2 KNO 3(aq)

Basic Eqn: AB + O AO + BO Ashley you’re my BFF Hey Ladies (3 weeks later) That was a great date Baby, I love you

Produce oxide compounds and energy (very exothermic) Ex: CH 4 + 2O 2 CO 2 + 2H 2 O + ENERGY Honey, Why is Ashley’s number on your phone?