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Balancing Equations. 1.Determine the correct formulas for all the reactants and products. 2.Write the skeleton equation. (Use + signs between products.

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Presentation on theme: "Balancing Equations. 1.Determine the correct formulas for all the reactants and products. 2.Write the skeleton equation. (Use + signs between products."— Presentation transcript:

1 Balancing Equations

2 1.Determine the correct formulas for all the reactants and products. 2.Write the skeleton equation. (Use + signs between products and  to separate reactants from products.) Rules for Writing and Balancing Equations:

3 3.Count the number of atoms of each element in the reactants and products…left…right…left…right …left…right 4.Balance the elements one at a time by using coefficients. (if no coefficient, assume it to be 1). NEVER balance an equation by changing a subscript!

4 5.Check each atom when you’re done to be certain they are equal on both sides of the equation. 6.Make sure all your coefficients are in the lowest possible ratio.

5 Zn+HC l  ZnC l 2 + H 2 Count how many of the first element you have on the reactant side. 1 Zn

6 Zn+HC l  ZnC l 2 + H 2 Then count how many of that SAME element you have on the product side. 1 Zn

7 Zn+HC l  ZnC l 2 + H 2 1H If the two numbers are equal, go to next element. If not equal, add a coefficient in front of that compound to make them equal. 2 2H1 Zn

8 Zn+2HC l  ZnC l 2 + H 2 Continue moving from left to right counting atoms on both sides of the equation and adding coefficients when needed.

9 Zn+2HC l  ZnC l 2 + H 2 When you reach the  go back to the beginning and recheck everything…left to right, left to right, left to right.

10 Zn+2HC l  ZnC l 2 + H 2 Check your equation one more time to make sure it’s correct. Left to right, left to right, left to right…


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