How does a chemical reaction obey the law of conservation of matter? A The same number of molecules appear in the reactants and products. B C The total mass of the reactants is equal to the total mass of the products. The total number of chemical bonds in the reactants is the same as the number of bonds in the products. The same number of reactant particles as product particles are involved in the reaction.

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Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.