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Learn how to balance equations through notes
and white boards/markers.
I. STARTER (write this under the date
10/20)
1. Pick a vocabulary word and KISS
definition
2. Circle your answer and Justify
your choice
Which of the following set of coefficients would
balance the following equation?
___ Na2So4 + ___ Mg → ___ Na + ___ MgSO4
F 1,1,2,1
G 1,2,1,2
H 2,1,1,2
J 2,1,2,1
Remember…
Law of Conservation of mass= matter can’t be
created or destroyed (it can only change forms)
This applies to chemical reactions:
 The same number of atoms of each element
that exist before the reaction will exist after the
reaction…therefore it is:
Balanced
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

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1. Find yield sign, and draw a vertical line
2. List your elements on both sides of the line
3. Count the number of atoms for each element
4. Are the balanced? (Do they match)
5. Fix it!!!
Practicing balancing equations on board

A downloadable app on a phone has a game. It
has you begin with a certain number of
shapes, and the goal is to rearrange them into
a certain shape or pattern (like tangrams). You
have to use all of the shapes to reach the goal.
How does this relate to the law of conservation
of mass?
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
* When you drive up to Mcdonalds, you order
food and pay them $5.00. How much money
worth of food products should you get in
return? How does this relate to the law of
conservation of mass?
**7th, 6th, 3rd, and 4th periods: once finished with
the ending-open your journals to October 11th
to be graded!