# Writing and balancing chemical equations worksheet #1

Well on the right-hand side, we have two aluminums. How many oxygens do I have on the left-hand side?

The numbers of N and O atoms on either side of the equation are now equal, and so the equation is balanced. But still we have an issue with the oxygens.

So instead of two aluminum atoms, let me have four aluminum Two times two is four. Check Your Learning Write a balanced equation for the decomposition of ammonium nitrate to form molecular nitrogen, molecular oxygen, and water.

We just can multiply both sides by the same number that gets rid of having this fraction or this decimal here. So what I'm saying here is to get rid of this 1.

So what can we do? Over here on the left-hand side, we have two oxygens.

### Chemistry balancing chemical equations worksheet answer key

Dividing each coefficient by the greatest common factor, 3, gives the preferred equation: Use this interactive tutorial for additional practice balancing equations. These spectator ions—ions whose presence is required to maintain charge neutrality—are neither chemically nor physically changed by the process, and so they may be eliminated from the equation to yield a more succinct representation called a net ionic equation: Following the convention of using the smallest possible integers as coefficients, this equation is then written: This net ionic equation indicates that solid silver chloride may be produced from dissolved chloride and silver I ions, regardless of the source of these ions. Over here on the left-hand side, we have two oxygens. I now have two aluminums, and so it looks like the aluminums are balanced, and they are indeed balanced. Well one thing might be to say, "Okay, if I've got "two aluminums here and I have one aluminum here, "well why don't I just double the number "of aluminums right over here? Balancing chemical equations Video transcript - Balancing chemical equations is one of those concepts in chemistry that often confuses people. Well on the left-hand side, we have one aluminum. Actually, let me just write the chemical equation first in the form that it was before. We want whole number molecules. Although the equation for the reaction between molecular nitrogen and molecular hydrogen to produce ammonia is, indeed, balanced, the coefficients are not the smallest possible integers representing the relative numbers of reactant and product molecules. But I think we'll see that if we work through this carefully and methodically, and we also appreciate the art of balancing chemical equations, that it's actually not too bad. So one thing that you might say is, "Okay, well how do I go from two to three? Equations for Ionic Reactions Given the abundance of water on earth, it stands to reason that a great many chemical reactions take place in aqueous media.

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