UP Board Class 12 th Chemistry paper 1 is scheduled to be held on February 20, 2018, and Paper 2 will be held on February 22, 2018. Students find chemistry a difficult subject because of the chemical ...

A chemical equation is said to be balanced when there are the same number of the same type of every atom on both sides of the equation. Balanced symbol equations show what happens to the different ...

If the words shown above are replaced by the correct chemical formulae, it will result in an unbalanced equation, as shown here. Cu + O 2 → CuO Notice that there are unequal numbers of each type of ...