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