Balancing+Formula+Practice

Balancing Formula Practice

Look at the follo﻿wing equations and decide if they are balanced or not. If the equation is balanced, write out how many of each atom each side of the equa﻿tion has. If it is NOT balanced, can you add coefficients so that the equation is balanced?

Ex.) 4Na + O2 --> 2Na 2 ﻿ O Yes it is balanced. Each side has 4 sodium atoms and 2 oxygen atoms.

﻿﻿﻿2) H2 + Cl2 --> 2 HCl add a coefficient of 2 to make both sides equal.

3) 4P + 3O﻿2 --> 2P2O3  yes its balanced. 4 phosphorus and 6 oxygen

<span style="font-family: Georgia,serif;"> 4) KClO4 --> KCl + 2O2 <span style="font-family: Georgia,serif;"> yes its balanced.