The document focuses on the concept of balancing chemical equations and the importance of understanding reactants and products in a chemical reaction. It emphasizes the law of conservation of mass, which states that matter cannot be created or destroyed, and provides guidelines for effectively balancing equations, including the use of coefficients. Additionally, it encourages maintaining an inventory chart of chemicals for accurate balancing.

1. Part 4
Lesson 4

2. • Red Slides: Please record the important terms
in your work bundle.
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First and last Name
Science, Grade, Class

3. • Red Slides: Please record the important terms
in your work bundle.
– You’ll need these notes to complete the work
bundle
Copyright © 2024 SlideSpark .LLC
First and last Name
Science, Grade, Class

4. • Red Slides: Please record the important terms
in your work bundle.
– You’ll need these notes to complete the work
bundle and to be successful on the review game.
Copyright © 2024 SlideSpark .LLC
First and last Name
Science, Grade, Class

5. Chemical Change: The change of
substances into other substances
through a reorganization of the atoms.
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6. Chemical Change: The change of
substances into other substances
through a reorganization of the atoms.
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9. New Area of Focus: Balancing Chemical
Equations.

10. • New Area of Focus: Balancing Chemical
Equations.
– No red slide notes but you should show lots of
work.

11. Balancing Chemical Equations.
2H2 + 202 = 2H2O
Reactants (before)
Reaction
Products (after)
Why is this important?

12. Balancing Chemical Equations.
This is what happens in a chemical reaction
2H2 + 202 = 2H2O
Reactants (before)
Reaction
Products (after)

13. Balancing Chemical Equations.
This is what happens in a chemical reaction
2H2 + 202 = 2H2O
Reactants (before)
Reaction
Products (after)

14. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
2H2 + 202 = 2H2O
Reactants (before)
Reaction
Products (after)

15. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
2H2 + 202 = 2H2O
Reactants (before)
Reaction
Products (after)

16. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
2H2 + 02 = 2H2O
Reactants (before)
Reaction
Products (after)

17. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
2H2 + 02 = 2H2O
Reactants (before)
Reaction
Products (after)

18. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
2H2 + 02 = 2H2O
Reactants (before)
Reaction
Products (after)

19. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
It also describes the phases of each (s) (l) (g)
2H2 + 202 = 2H2O
Reactants (before)
Reaction
Products (after)
(l) (g)
(l)

20. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
It also describes the phases of each (s) (l) (g)
It also describes the amount of each.

21. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
It also describes the phases of each (s) (l) (g)
It also describes the amount of each.
Reactants Products

22. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
It also describes the phases of each (s) (l) (g)
It also describes the amount of each.
Reactants Products
Reaction

23. Balancing Chemical Equations.
This is what happens in a chemical reaction
It describes what you started with…and
ended with.
It also describes the phases of each (s) (l) (g)
It also describes the amount of each.
Reactants Products
1 Methane 2 Oxygen 1 Carbon Dioxide 2 Water
Reaction
.
The coefficients of a balanced equation tell you
the ratio of the # of moles of each reactant and
product.

24. Balancing a chemical equation refers to
establishing the mathematical
relationship between the quantity of
reactants and products.

25. Balancing a chemical equation refers to
establishing the mathematical
relationship between the quantity of
reactants and products.
Reactant: Starting

26. Balancing a chemical equation refers to
establishing the mathematical
relationship between the quantity of
reactants and products.
Reactant: Starting

27. Balancing a chemical equation refers to
establishing the mathematical
relationship between the quantity of
reactants and products.
Reactant: Starting

28. Balancing a chemical equation refers to
establishing the mathematical
relationship between the quantity of
reactants and products.
Reactant: Starting
Products: Ending

29. Balancing a chemical equation refers to
establishing the mathematical
relationship between the quantity of
reactants and products.
Reactant: Starting
Products: Ending
"reacts with" "reacts with"

30. In any physical or chemical change,
matter is neither created nor destroyed
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31. In any physical or chemical change,
matter is neither created nor destroyed
Matter can be changed from one form to
another.
Copyright © 2024 SlideSpark .LLC

32. In any physical or chemical change,
matter is neither created nor destroyed
Matter can be changed from one form to
another.
Copyright © 2024 SlideSpark .LLC

33. In any physical or chemical change,
matter is neither created nor destroyed
Matter can be changed from one form to
another.
Copyright © 2024 SlideSpark .LLC

34. In any physical or chemical change,
matter is neither created nor destroyed
Matter can be changed from one form to
another.
Copyright © 2024 SlideSpark .LLC

35. In any physical or chemical change,
matter is neither created nor destroyed
Matter can be changed from one form to
another.
Copyright © 2024 SlideSpark .LLC

36. In any physical or chemical change,
matter is neither created nor destroyed
Matter can be changed from one form to
another.
Copyright © 2024 SlideSpark .LLC

37. In any physical or chemical change,
matter is neither created nor destroyed
Matter can be changed from one form to
another.
Copyright © 2024 SlideSpark .LLC

38. In any physical or chemical change,
matter is neither created nor destroyed
Matter can be changed from one form to
another.
Copyright © 2024 SlideSpark .LLC

40. • Remember the Law Conservation of Mass:
Matter cannot be created or destroyed. That
means we need to have the same amount of
chemicals on each side of the .
• For this reason, put a square around the
chemical formulas.
• Example

41. • Remember the Law Conservation of Mass:
Matter cannot be created or destroyed. That
means we need to have the same amount of
chemicals on each side of the .
• For this reason, put a square around the
chemical formulas.
• Example

42. • Remember the Law Conservation of Mass:
Matter cannot be created or destroyed. That
means we need to have the same amount of
chemicals on each side of the .
• For this reason, put a square around the
chemical formulas.

43. • Remember the Law Conservation of Mass:
Matter cannot be created or destroyed. That
means we need to have the same amount of
chemicals on each side of the .
• For this reason, put a square around the
chemical formulas.
• Example

44. Begin balancing chemical equations by
putting numbers (coefficients) in front
of them.

45. Begin balancing chemical equations by
putting numbers (coefficients) in front of
them.
Example H2O on one side could become 2
H2O

46. Begin balancing chemical equations by
putting numbers (coefficients) in front of
them.
Example H2O on one side could become 2
H2O
Remember that each side needs to have
same number of Hydrogen and Oxygen

47. Begin balancing chemical equations by
putting numbers (coefficients) in front of
them.
Example H2O on one side could become 2
H2O
Remember that each side needs to have
same number of Hydrogen and Oxygen
Note – Don’t change the subscript
Example H2O becomes H3O
WRONG!

48. • Balancing Equations Available Sheet.
– Complete each equation as we cover it in
class.

49. Use a Pencil
with Eraser

50. • A way to start off the process is to create
an inventory of your chemicals.

51. • A way to start off the process is to create
an inventory of your chemicals. BOXES!!!

52. • A way to start off the process is to create
an inventory of your chemicals.

53. • A way to start off the process is to create
an inventory of your chemicals.

54. • A way to start off the process is to create
an inventory of your chemicals.

55. • A way to start off the process is to create
an inventory of your chemicals.

56. • A way to start off the process is to create
an inventory of your chemicals.

57. • A way to start off the process is to create
an inventory of your chemicals.

58. • A way to start off the process is to create
an inventory of your chemicals.

59. • A way to start off the process is to create
an inventory of your chemicals.

60. • A way to start off the process is to create
an inventory of your chemicals.

61. • A way to start off the process is to create
an inventory of your chemicals.

62. • A way to start off the process is to create
an inventory of your chemicals.

63. • A way to start off the process is to create
an inventory of your chemicals.

64. • A way to start off the process is to create
an inventory of your chemicals.

65. • A way to start off the process is to create
an inventory of your chemicals.

66. • A way to start off the process is to create
an inventory of your chemicals.

67. • A way to start off the process is to create
an inventory of your chemicals.

68. • A way to start off the process is to create
an inventory of your chemicals.

69. • A way to start off the process is to create
an inventory of your chemicals.

70. • A way to start off the process is to create
an inventory of your chemicals.

71. • A way to start off the process is to create
an inventory of your chemicals.

72. • A way to start off the process is to create
an inventory of your chemicals.

73. • A way to start off the process is to create
an inventory of your chemicals.

74. • A way to start off the process is to create
an inventory of your chemicals.

75. • A way to start off the process is to create
an inventory of your chemicals.

76. • A way to start off the process is to create
an inventory of your chemicals.

77. • A way to start off the process is to create
an inventory of your chemicals.

78. • A way to start off the process is to create
an inventory of your chemicals.

79. • A way to start off the process is to create
an inventory of your chemicals.

80. • A way to start off the process is to create
an inventory of your chemicals.

81. • A way to start off the process is to create
an inventory of your chemicals.

82. • A way to start off the process is to create
an inventory of your chemicals.

83. • A way to start off the process is to create
an inventory of your chemicals.

84. • A way to start off the process is to create
an inventory of your chemicals.

85. • Now look at the inventory and begin the
process of balancing the equation.

86. One Sodium

87. One Sodium Two Sodium

88. One Sodium Two Sodium
Let’s add a 2 here and see if it balances.
2

89. Did it balance? Are we done?
2

90. Did it balance? Are we done?
We should do a new inventory chart.
2

91. 2

92. 2

93. 2

94. 2
2

95. 2
2

96. 2
2

97. 2
2 2

98. 2
2 2

99. 2
2 2

100. 2
2 2
6

101. 2
2 2
6

102. 2
2 2
6

103. 2
2 2
6 5

104. 2
2 2
6 5

105. One Sodium Two Sodium
Let’s try again and add a 2 to the other side.
2 2

106. Does it balance this time?

120. Life is like riding a bicycle.
To keep your balance, you
must keep moving.
-Albert Einstein

121. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up.
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O

122. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance…
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O

124. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance…
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O

125. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance… BOXES!
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O

126. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance…
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O

127. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance…
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O
1 1

128. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance…
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O
1 1

129. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance…
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O
1 1
4 2

130. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance…
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O
1 1
4 2

131. • It should work most of the time although it can be
very tricky. Always keep an inventory chart or it
will get all messed up. Try to balance…
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O
1 1
4 2
2 3

132. __CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O
1 1
4 2
2 3

133. __CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O
1 1
4 2
2 3
What
should we
put to
equal 4?

134. • See if this is right?
__CH4 + __O2 --> __CO2 + __H2O
__CH4 + __O2 --> __CO2 + __H2O
C
H
O

135. • Answer: Incorrect – The inventory does not match.
__CH4 + __O2 --> __CO2 + __H2O
1 CH4 + 2 O2 --> 2 CO2 + 2 H2O
C
H
O
1 2
4 4
4 5

136. • Answer: See if this is right?
__CH4 + __O2 --> __CO2 + __H2O
1 CH4 + 2 O2 --> 1 CO2 + 2 H2O
C
H
O

137. • Answer: See if this is right?
__CH4 + __O2 --> __CO2 + __H2O
1 CH4 + 2 O2 --> 1 CO2 + 2 H2O
C
H
O

138. • Answer: See if this is right?
• Answer: Yes, A balanced equation
__CH4 + __O2 --> __CO2 + __H2O
1 CH4 + 2 O2 --> 1 CO2 + 2 H2O
C
H
O
1 1
4 4
4 4

140. • Try Again
__CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F

141. • Try Again BOXES!!!
__CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F

142. • Try Again BOXES!!!
__CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F

143. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F

144. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F

145. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1

146. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1

147. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1
1 2

148. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1
1 2

149. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1
1 2
1 1

150. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1
1 2
1 1

151. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1
1 2
1 1
2 1

152. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1
1 2
1 1
2 1

153. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F
1 1
1 2
1 1
2 1

154. __CH4 + __O2 --> __CO2 + __H2O
___ NaCl + __ BeF2 --> __ NaF +__ BeCl2
N
a
Cl
Be
F

155. __CH4 + __O2 --> __CO2 + __H2O
2 NaCl + 1 BeF2 --> 2 NaF + 1 BeCl2
N
a
Cl
Be
F
2 2
2 2
1 1
2 2

156. Part 4
Lesson 4