MASS RELATIONS IN CHEMISTRY STOICHIOMETRY

TO this point, our study of chemistry has been largely qualitative, involving few calculations. However, chemistry is a quantitative science. From Chapter 2 we see that atoms differ from one another not only in composition (number of protons, electrons, neutrons) but also in mass. Chemical formulas, which we learned to write and name, tell us not only the atom ratios in which elements are present but also mass ratios. 

The general topic of this chapter is stoichiometry (stoy-key-OM-e-tree), the study of mass relations in chemistry. Whether dealing with molar mass (Section 3.1), chemical formulas (Section 3.2), or chemical reactions (Section 3.3), you will be answering questions that ask how much or how many . For example, 

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CHAPTER THREE Mass Relations in Chemistry Stoichiometry... 

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