Balancing Chemical Equations
Presentation
•
Science
•
9th - 12th Grade
•
Hard
+14
Standards-aligned
Stacy King
Used 4+ times
FREE Resource
8 Slides • 7 Questions
1
2
Multiple Choice
Which is the correct chemical equation for the following: Solid Zn reacts with silver (I) chloride to produce Zinc (II) chloride and silver metal
Zn + AgCl → ZnCl2 + Ag
ZnCl2 + Ag → Zn + AgCl
ZnCl2 + Ag2 → Zn + AgCl
Zn2Cl + Ag → Zn + AgCl
3
Multiple Choice
4
Multiple Choice
5
Multiple Choice
Which compounds are the PRODUCTS of this reaction?
CO2 + H2O
C6H12O6 + O2
C6H12O6 + CO2
H2O + O2
6
Balancing Chemical Equations
We will
1. Review the law of Conservation of Mass
2. The Rules of Balancing Chemical Equations
I will Practice and Apply what I have learned.
7
According to the Law of Conservation of Mass, the mass of the reactants must equal the mass of the products.
8
As you can see, this equation needs to be balanced. There are not enough oxygen atoms on the product side.
9
Equations are balanced by inserting coefficients into the equation. Right now, the coefficients are 1 (Ones are not usually written)
2
2
10
Subscripts remain the same.
2. Coefficients have to be in front of the molecule.
11
A balanced equation is a ratio that must be expressed in straightforward whole numbers.
12
# atoms reactants | # atoms products |
|---|---|
Fe | Fe |
O | O |
13
Draw
Let me see you balance!
14
Multiple Choice
What coefficients are needed to balance the following chemical equation?
__Zn + __HCl → __ZnCl2 + __H2
1,1,1,1
1,2,1,1
2,1,2,2
2,1,2,1
15
Multiple Choice
What coefficients are needed to balance the following chemical equation?
__Fe + __ AgNO3 → __ Ag + __ Fe(NO3)3
1,1,1,1
1,2,1,2
1,3,3,1
3,1,3,1
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