3/9/10No “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 ChemicalReactions”

4.

2. 3. 5.

For today’s notes…

Copy:The definitionA hint to help you remember1 ExampleA picture, from the overhead or one on your

own

1. Synthesis2 things come together to make one

reactant + reactant 1 product

Hint: Boy + Girl Couple

• Basically: A + B AB• Example: C + O2 CO2• Blue + yellow Green

1. Synthesis

Example C + O2

OO C + O O C

OO COO C OO C OO C OO

CO

O C

OO

CO

O

C O

O

C O

O

C OO

C OO C

OO C OO C

General: A + B AB

Do Now – 3/10/101. Balance and classify the following

reaction:

S8 + O2 SO2

2. What is the difference between an atom and a molecule?

S8 + 8O2 8SO2

Synthesis Reaction

Atom: smallest part of an element (“a piece of Hydrogen)Molecule: 2 or more atoms bonded together

i.e. O2 H2O CO CO2

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 H2O 2H2 + O2

Types: Decomposition

Example: NaCl

General: AB A + B

Cl Na Cl + Na

Types: Decomposition

Example 2HgO

O Hg

O Hg

Hg

O O Hg

+

General: AB A + B

3. Combustion Reactions• Occur when a substance

(hydrocarbon) reacts with oxygen gas.

• Resulting in the products carbon dioxide (CO2)and water (H2O).

• Hint: Think car engines CO2

• In general: CxHy + O2 CO2 + H2O

4. Single Replacementone element replaces another in a

compoundA 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) ORA + 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 + CuCl2

ZnClCl Cu +

General: AB + C AC + B

ClCl 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

SOMg Ca

+O S

Mg Ca+

DO NOW – 3/15/10State the type of reaction and balance__C7H14(l) +__O2 (g) __CO2 (g)

+__H2O(g)

Combustion_____ + O2 CO2 + H2O

2 C7H14(l) +21 O2 (g) 14 CO2 (g)+14 H2O(g)

Today:Review: Blue Sheet from last FridayMore practice

Announcements:Test tomorrow (Balancing, Naming,

Idenifying types of reactions)HW: Due Thursday 3/18

Read pg. 320-24Answer 7-12 on pg 324

Mixed Practice

1. BaCl2 + H2SO4 3. Cl2 + 2NaBr 4. 2HgO 5. 2Al2O3

State the type, predict the products, find the charges/criss cross, and balance the following reactions:

6. C6H12 + O2

7. Zn + CuSO4

8. Cs + Br2

9. FeCO3

10. 2C2H6 + 7O2

Mixed Practice• State the type, predict the products, find the

charges/criss cross, and balance the following reactions:

1. BaCl2 + H2SO4 - Double Replacement BaSO4 + HCl

Ba(SO4 )+ HCl

- BaSO4 + HCl

- BaCl2 + H2SO4 BaSO4 + HCl

- BaCl2 + H2SO4 BaSO4 + 2HCl

-2+2 +1 -1

Mixed Practice

1. BaCl2 + H2SO4 3. Cl2 + 2NaBr 4. 2HgO 5. 2Al2O3

State the type, predict the products, find the charges/criss cross, and balance the following reactions:

6. C6H12 + O2

7. Zn + CuSO4

8. Cs + Br2

9. FeCO3

10. 2C2H6 + 7O2