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Balancing equations
MS: Middle School
Created on February 10, 2023
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Transcript
Balancing equations
START
Here we will practice the steps in balancing chemical equations
GO!
Basics
Practice
Challenge
CODE
Basics
Sort your reactants and products
START
Zn + 2HCl --> 2ZnCl2 + H2
Reactants
Products
2HCl
2ZnCl2
H2
Zn
Continue...
view Results
Define the Coefficients and Subscripts
Large number= front
Coefficient
Subscript
Small number behind
Ca2
2Ca
3Be
Continue...
view Results
Continue...
The first number of your password is...
Challenge
Fill in the blank (s) with the correct coefficientsYou may need a piece of paper to organize your thoughts
START
Choose the answer that would fill in the blanks: Al2O3 -> Al +O2
2O2 --> 4H2O
1O2 --> 3H2O
2O2 --> 2H2O
3O2--> 2H20
Choose the answer that would fill in the blanks: _Na + _H2O --> _NaOH + H2
2Na + 2 H2O --> 2NaOH
1Na + 4 H2O --> 3NaOH
1Na + 2 H2O --> 1NaOH
2Na + 1 H2O --> 4NaOH
Choose the answer that would fill in the blanks: Fe2O2 + H2--> _Fe + _H2O
2Fe + 2H20
4Fe + 1H20
1Fe + 2H20
2Fe + 1H20
TRY AGAIN
Continue...
The second number of your password is...
Practice
How many of each element is on the side indicated?
START
Choose the correct number: 2SO2
S=2, O= 4
S=4, O= 4
S=2, O= 2
Choose the correct number: 2Fe2O3
Fe=2, O= 4
Fe=4, O=6
Fe=4, O= 5
Choose the correct number: 3C2H5
C=5, H= 8
C=6, H= 15
C=2, O= 5
EMERGENCY
TRY AGAIN
Continue...
The third number of your password is...
You have reached the last step to unlock the laboratory 🧪, go ahead!
Introduce la contraseña
____Al2O3 --> Al + O2