STUDENT STUDY GUIDE FOR 8TH GRADE CHEMISTRY

In balancing chemical equations, you cannot change the subscripts that tell how many atoms of each kind are present in a molecule. That would be changing the identity of the substance. You can only change the numbers in front of the symbols for the molecules. Try your hand at balancing the following equations: 1. NH3 + O2 = NO + H2O. 2. ................
................