1. Monday, March 9, 2015
Homework: NONE! Objective: We will be able to balance chemical equations.
Catalyst: Please answer Monday’s question on the back of your catalyst sheet!

2. Announcements
No tutoring today or tomorrow
Quiz on THURSDAY!

3. Agenda
Catalyst
Announcements
Notes
Practice
Exit Slip

4. Table of Contents

5. Review Practice
Determine how many of each type of atom you have in the reactants and products

6. Balancing Chemical Equations
Step
Description
Example 1
Create an atom inventory with elements in the same order as the equation
__Na + __MgF2__NaF + __Mg

7. Balancing Chemical Equations
Step
Description
Example 1
Create an atom inventory with elements in the same order as the equation
__Na + __MgF2__NaF + __Mg
Na – Na – 1
Mg – Mg – 1
F – F – 1

8. Balancing Chemical Equations
Step
Description
Example 2
Pick an element that is not equal on both sides (save oxygen and hydrogen until last!)
__Na + __MgF2__NaF + __Mg
Na – Na – 1
Mg – Mg – 1
F – F – 1

9. Balancing Chemical Equations
Step
Description
Example 3
Add a coefficient in front of the formula with that element, and adjust the inventory
__Na + __MgF2__NaF + __Mg
Na – Na – 1
Mg – Mg – 1
F – F – 1

10. Balancing Chemical Equations
Step
Description
Example 3
Add a coefficient in front of the formula with that element, and adjust the inventory
__Na + __MgF2 2NaF + __Mg
Na – Na – 1 2
Mg – Mg – 1
F – F – 1 2

11. Balancing Chemical Equations
Step
Description
Example 4
Continue adding coefficients to get the same number of atoms on each side
__Na + __MgF2 2NaF + __Mg
Na – Na – 1 2
Mg – Mg – 1
F – F – 1 2

12. Balancing Chemical Equations
Step
Description
Example 4
Continue adding coefficients to get the same number of atoms on each side
2 Na MgF2 2 NaF + 1 Mg
Na – Na – 1 2
Mg – Mg – 1
F – F – 1 2

13. Rules 1. You can only change coefficients.
2. All coefficients must be whole numbers.
3. You must end with the same number of all elements on reactants and products.
4. Coefficients should be as simple as possible.

14. Examples
Work through the examples with Ms. Kline.

15. Practice
Complete the practice problems on the back of your notes sheet.

16. Exit Ticket
Create an atom inventory and balance the following equations:
___Fe + __ S  ___ FeS
___O2 + ___H2  ___H2O
___ Fe + ___Cl2___FeCl3

17. Exit Ticket Thinking about your upcoming test, what are:
3 – things you are confident about
2 – things you are NOT confident about
1 – thing you are going to do tonight to prepare

18. Tuesday, March 10, 2015
Homework: Study for Quiz! Objective: We practice balancing chemical equations.
Catalyst: Please answer Tuesday’s question on the back of your catalyst.
3/ Classwork: Balancing Chemical Equations

19. Announcements
Quiz Thursday!

20. Agenda Catalyst Announcements Finish worksheet practice
Whiteboard practice
Exit Ticket

21. Review: Exit Ticket
Create an atom inventory and balance the following equations:
___Fe + __ S  ___ FeS
___O2 + ___H2  ___H2O
___ Fe + ___Cl2___FeCl3

22. Finish Practice Problems
On the back of yesterday’s worksheet, finish the practice problems.
You have 10 minutes to solve!

23. Problem #1
__Na + __ Cl2  __NaCl

24. Problem #1
2 Na + 1 Cl2  2 NaCl

25. Problem #2
__SnO2 + __ H2  __Sn + __H20

26. Problem #2
1 SnO2 + 2 H2  1 Sn + 2 H20

27. Problem #3
__C2H4 + __ O2  __H2O + __CO2

28. Problem #3
1 C2H4 + 3 O2  2 H2O + 2 CO2

29. __TiCl4 + __ H2O  __TiO2 + __HCl
Problem #4
__TiCl4 + __ H2O  __TiO2 + __HCl

30. Problem #4
1 TiCl4 + 2 H2O  1 TiO2 + 4 HCl

31. Problem #5
__C2H6O + __ O2  __CO2 + __H2O

32. Problem #5
1 C2H6O + 3 O2  2 CO2 + 3 H2O

33. Exit Ticket Balance the following equations: ___H2 + __ Cl2  ___ HCl
___ Fe + ___O2___Fe2O3
___ BaO+ ___H2O___Ba(OH)2

34. Wednesday, March 11, 2015
Homework: STUDY FOR QUIZ! Objective: We practice balancing chemical equations.
Catalyst: Please answer Wednesday’s catalyst question on the back of your catalyst sheet.
3/11 Classwork: Snowman Balancing Practice

35. Announcements
Quiz TOMORROW!!
Tutoring today after school (after 4pm)!

36. Agenda
Catalyst
Announcements
Snowman Balancing Race!
Exit Ticket

37. Review - Yesterday Balance the following equations:
___H2 + __ Cl2  ___ HCl
___ Fe + ___O2___Fe2O3
___ BaO+ ___H2O___Ba(OH)2

38. Snowman Practice You will be working in pairs.
One person will draw a snowman card from Ms. Kline. You and your partner will balance the equation and show Ms. Kline.
If it is correct, take another!
Try to get as many as you can!
Earn extra points on the quiz!

39. Exit Ticket __ P + __ O2 __ P4O10 __ Al2O3 __ Al + __ O2
__ Cl2 + __ NaBr  __NaCl + __ Br2
How well did each member of your group work today?

40. Thursday, March 12, 2015 You MUST have a pencil!!
On the GREEN side of your scantron, bubble in your ENTIRE ID number and write your name.

41. Exit Ticket What are the FOUR signs of a chemical reaction?
__ CH4 + __ O2  __ CO2 + __ H2O
What grade do you think you will get on the quiz?
What can you do to improve that grade?

42. Friday, March 13, 2015
Homework: NONE! Objective: We identify the five types of chemical reactions.
Catalyst: Please answer Friday’s catalyst question on the back of your catalyst sheet.
3/11 Notes: Types of Chemical Reactions

43. Agenda
Catalyst
Quiz
Notes
Exit Ticket

44. Think + Write
What is happening from the reactant side of a chemical equation to the product side of a chemical equation?

45. Types of Reactions There are millions of different reactions!
There are 5 major types of chemical reactions.

46. Who are these people?

47. #1 - Synthesis Reactions
Description
Example Chemical Reactions
Synthesis = put together or combine
2 substances combine to make one compound (also called “combination”)
Ca + O2 ® CaO
SO3 + H2O ® H2SO4

48. #2 – Decomposition Reactions
Description
Example Chemical Reactions
decompose = fall apart
one reactant breaks apart into two or more elements or compounds
Energy is usually required
NaCl Na + Cl2
CaCO CaO + CO2

49. #3 – Single Replacement Reactions
Description
Example Chemical Reactions
One element replaces another
Reactants must be an element and a compound.
Products will be a different element and a different compound.

50. #4 – Double Replacement Reactions
Description
Example Chemical Reactions
Two things replace each other.
Reactants must be two ionic compounds, in aqueous (aq) solution

51. #5 – Combustion Reactions
Description
Example Chemical Reactions
Combustion means “add oxygen”
Usually, a compound composed of only C, H, (and maybe O) is reacted with oxygen – usually called “burning”
CH + O2  CO2 + H2O

52. Practice: Name the Type of Reaction
2 H2 + O2 2 H2O
2 H2O  2 H2 + O2
Zn + H2SO4  H2 + ZnSO4
2 HgO  2 Hg + O2
2 KBr + Cl2  2 KCl + Br2
AgNO3 + NaCl  AgCl + NaNO3
2 C2H6 + 7 O2  4 CO2 + 6 H2O
Mg(OH)2 + H2SO3  MgSO3 + 2H2O
Synthesis
Decomposition
Single Replacement
Decomposition
Single Replacement
Double Replacement
Combustion
Double Replacement

53. Exit Ticket
Identify the reactions below as COMBINATION, DECOMPOSITION, SINGLE REPLACEMENT, or DOUBLE REPLACEMENT.
1) ____ P + O2 → P4O10 5) ____ Mg + O2 → MgO
2) ____ HgO → Hg + O ) ____ Al2O3 → Al + O2
3) ____ MgCl2 + NaBr → NaCl + MgBr
____ H N2 → NH3 7) __ C2H5 + O2  CO2 + H2O
If I were to give you a quiz TOMORROW about identifying types of reactions, how would you do?