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.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.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!
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.
Zn+HC l ZnC l 2 + H 2 Count how many of the first element you have on the reactant side. 1 Zn
Zn+HC l ZnC l 2 + H 2 Then count how many of that SAME element you have on the product side. 1 Zn
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
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.
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.
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…