numbers in scientific notation using a calculator Be familiar with the following terms: atom, element, molecule, compound, mixture, homogeneous, heterogeneous, extensive, intensive Decide if a digit in a number is "significant" Round answers to arithmetic problems to reflect the precision of the number AP Study Guide for Chapter 2 Students should be able to... Describe Dalton's atomic theory. Count protons, neutrons, and electrons in an isotope. Know properties of protons, neutrons…
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