Does a balanced chemical equation obey the conservation of mass ?

Define balanced chemical equation

Write a balanced chemical equation to represent the formation of water

Write the balanced chemical equations for the reaction of Cl_2 with, cold and dil. NaOH.

Write the balanced chemical equations for the reaction of Cl_2 with cold an dil. NaOH.

Write the balanced chemical equation for the following reactions. sodium + water

What is law of conservation of mass?

Write the balanced chemical equation for the reaction of CI_2 with hot and conc. NaOH. Is this reaction disproportionation reaction ? Justify.

Write the balanced chemical equation for the reaction of CI_2 with hot and concentrated NaOH. Is this reactiona disporpetination reaction? Justify.

How do write balanced chemical equations?