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To balance a chemical equation, first write out your given formula with the reactants on the left of the arrow and the products on the right. For example, your equation should look something like "H2 + O2 → H2O."
Follow four easy steps to balance a chemical equation: Write the unbalanced equation to show the reactants and products. Write down how many atoms of each element there are on each side of the reaction arrow. Add coefficients (the numbers in front of the formulas) so the number of atoms of each element is the same on both sides of the equation.
A chemical equation shows the starting compound(s)—the reactants—on the left and the final compound(s)—the products—on the right, separated by an arrow. In a balanced chemical equation, the numbers of atoms of each element and the total charge are the same on both sides of the equation.
Explain the roles of subscripts and coefficients in chemical equations. Balance a chemical equation when given the unbalanced equation. Explain the role of the Law of Conservation of Mass in a chemical reaction.
My new book on balancing equations is now available! https://books.breslyn.org/l/balancing Balancing chemical equations is a core skill in chemistry. In this video you'll learn the basics for...
Learn to balance chemical equations through interactive simulations and challenges on PhET.
Learn how to balance chemical equations with step-by-step guidance and practice problems on Khan Academy.
Being able to balance chemical equations is a vital skill for chemistry. Here's a look at the steps involved in balancing equations, plus a worked example of how to balance an equation.
To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above. Use uppercase for the first character in the element and lowercase for the second character. Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored.
Cu + O 2 → CuO. Notice that there are unequal numbers of each type of atom on the left-hand side compared with the right-hand side. To make things equal, you need to adjust the number of...