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How to balance chemical equations?

Ignore the title -_- Does anyone know how to balance chemical equations? Someone who wants to teach me right now. I have a chemistry taks test tomorrow and dont know sh!t :’( Someone please help me :d Just explain to me how to do it, possibly give me an example.

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Answer #1

With the elements, make sure the amount of elements are completely equal to each other on both sides. Multiply the coefficient (number before the element) by the lower smaller number. If there’s no number, then it’s a 1.

say you have 2HCl + O - > H2O + Cl there’s 2 H on the left side, and 2 H on the other side. 2 Cl on the left, 1 on the right. So try adding a 2 in front of the Cl on the right: 2HCl + O - > H2O + 2Cl 1 O on the left, 1 O on the right.

there you go :D Sometimes I have problems balancing equations xD

Answer #2

The main thing is to make sure the number of elements on each side is equal.

If you’re having trouble then a helpful trick is to start with an element that’s only inside 1 molecule on both sides. Using the above example you know that the number of HCl and Cl must be equal, because those are the only ones with Cl in them. Or you can tell that O and H2O must be equal, because they’re the only ones with O in them. Or there must be twice as many HCl as H2O, because those are the only molecules with H in them and you need 2 HCL’s to match the H’s in 1 H2O.

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