3/9/10 No “Do Now” Questions today, instead… You have 12 minutes to complete the yellow half sheet of paper from yesterday, This will be checked in today (after your 12 minutes are up) If you finished your yellow half sheet, continue working on your vocabulary sheet from last Tuesday

Warm-up activity: As a group of 4-5 people… Try to put your slips of paper into 5 different groups No right or wrong answers, just do your best 5 minutes

On a blank sheet of paper, setup the below graphic organizer (you will take your notes on this) 1. “5 Types of Chemical Reactions”

For today’s notes… Copy: The definition A hint to help you remember 1 Example A picture, from the overhead or one on your own

1. Synthesis 2 things come together to make one reactant + reactant  1 product Hint: Boy + Girl  Couple Basically: A + B  AB Example: C + O 2  CO 2 Blue + yellow  Green

1. Synthesis Example C + O 2 OO C +  OO C OO C OO C O O C O O C O O C O O C O O C O O C O O C O O C O O C O O C O O C O O C General: A + B  AB

Do Now – 3/10/10 1. Balance and classify the following reaction: S 8 + O 2  SO 2 2. What is the difference between an atom and a molecule? S 8 + 8O 2  8SO 2 Synthesis Reaction Atom: smallest part of an element (“a piece of Hydrogen) Molecule: 2 or more atoms bonded together i.e. O 2 H 2 O CO CO 2 GET OUT YOUR NOTES FROM YESTERDAY (6 BOXES)

2. Decomposition 1 thing turns into 2 or more things Hint: Divorce or Breakup 1 couple  2 single people 1 Reactant  Product + Product In general: AB  A + B Example: 2 H 2 O  2H 2 + O 2

Types: Decomposition Example: NaCl General: AB  A + B  Cl Na Cl + Na

Types: Decomposition Example 2HgO  O Hg O OO + General: AB  A + B

3. Combustion Reactions Occur when a substance (hydrocarbon) reacts with oxygen gas. Resulting in the products carbon dioxide (CO 2 )and water (H 2 O). Hint: Think car engines  CO 2 In general: C x H y + O 2  CO 2 + H 2 O

4. Single Replacement one element replaces another in a compound A metal can replace a metal (+) or a nonmetal can replace a nonmetal (-). element + compound  product + product A + BC  AC + B (if A is a metal) OR A + BC  BA + C (if A is a nonmetal) (remember the cation always goes first!) Hint: Dancing partners, or relationships (breakup, one person dates someone else)

Types: Single Replacement Example: Zn + CuCl 2  Zn Cl Cu + General: AB + C  AC + B Cl Zn Cu +

5. Double Replacement Occur when a metal replaces a metal in a compound and a nonmetal replaces a nonmetal in a compound Compound + compound  product + product AB + CD  AD + CB Hint: Dancing partners, 2 Breakups, both people date other people Brad Pitt – Jennifer Anniston + Clay Aiken - Angelina Jolie  Brad Pitt – Angelina Jolie + Clay Aiken – Jennifer Aniston

Types: Double Replacement Example: MgO + CaS General:AB + CD  AD + CB S O  Mg Ca + O S Mg Ca +

DO NOW – 3/15/10 State the type of reaction and balance __C 7 H 14 (l) +__O 2 (g)  __CO 2 (g)+__H 2 O(g) Combustion _____ + O 2  CO 2 + H 2 O 2 C 7 H 14 (l) +21 O 2 (g)  14 CO 2 (g)+14 H 2 O(g)

Today: Review: Blue Sheet from last Friday More practice Announcements: Test tomorrow (Balancing, Naming, Idenifying types of reactions) HW: Due Thursday 3/18 Read pg Answer 7-12 on pg 324

Mixed Practice 1.BaCl 2 + H 2 SO 4  3.Cl 2 + 2NaBr  4.2HgO  5.2Al 2 O 3  State the type, predict the products, find the charges/criss cross, and balance the following reactions: 6.C 6 H 12 + O 2  7.Zn + CuSO 4  8.Cs + Br 2  9.FeCO 3  10.2C 2 H 6 + 7O 2 

Mixed Practice State the type, predict the products, find the charges/criss cross, and balance the following reactions: 1. BaCl 2 + H 2 SO 4  - Double Replacement -  BaSO 4 + HCl -  Ba(SO 4 )+ HCl - BaSO 4 + HCl - BaCl 2 + H 2 SO 4  BaSO 4 + HCl - BaCl 2 + H 2 SO 4  BaSO 4 + 2HCl

Mixed Practice 1.BaCl 2 + H 2 SO 4  3.Cl 2 + 2NaBr  4.2HgO  5.2Al 2 O 3  State the type, predict the products, find the charges/criss cross, and balance the following reactions: 6.C 6 H 12 + O 2  7.Zn + CuSO 4  8.Cs + Br 2  9.FeCO 3  10.2C 2 H 6 + 7O 2 