Читать книгу U Can: Chemistry I For Dummies - Hren Chris - Страница 5

In This Chapter

▶ Using scientific notation

▶ Comparing accuracy and precision

▶ Using and calculating with significant figures

Like any other kind of scientist, a chemist tests hypotheses by doing experiments. Better tests require more reliable measurements, and better measurements are those that have more accuracy and precision. Accurate and precise calculations are essential to successful experiments, so a large chunk of chemistry centers on ways to report and describe measurements.

How do chemists report their precious measurements? What’s the difference between accuracy and precision? And how do chemists do math with measurements? These questions may not keep you awake at night, but knowing the answers to them will keep you from making mistakes in chemistry.