Atomic structure Mass number,atomic number(proton number),and neutron number 2-4 Chemical Elements Chemical symbols Isotopes and the percent natural abundances Mass spectrometer 2-5 Atomic Mass Definition of atomic mass Atomic mass units Average atomic masses 2-6 Introduction to the Periodic Table Types ofelements Trends in periods and groups Introduction of main group elements 2-7 The Concept of the Mole and the Avogadro Constant Definition of mole and Avogadro's number Definition of molar mass 2-8 Using the Mole Concept in Calculations Converting between mass,number of moles,and number of atoms 4. 教学方法 多媒体教学： Illustration of law of conservation of matterand law of multiple proportions Illustration ofkey experiments leading to discoveries in atomic physics Illustration ofisotopes and massspectra Illustration ofperiodic table 互动教学： How can cathod-ray experiment prove the existence of electrons What is the identity of each of the radiation rays? How can the gold-foil experiment tell us the structure of anatom?Atomic structure Mass number, atomic number (proton number), and neutron number 2-4 Chemical Elements Chemical symbols Isotopes and the percent natural abundances Mass spectrometer 2-5 Atomic Mass Definition of atomic mass Atomic mass units Average atomic masses 2-6 Introduction to the Periodic Table Types of elements Trends in periods and groups Introduction of main group elements 2-7 The Concept of the Mole and the Avogadro Constant Definition of mole and Avogadro’s number Definition of molar mass 2-8 Using the Mole Concept in Calculations Converting between mass, number of moles, and number of atoms 4. 教学方法 多媒体教学： • Illustration of law of conservation of matter and law of multiple proportions • Illustration of key experiments leading to discoveries in atomic physics • Illustration of isotopes and mass spectra • Illustration of periodic table 互动教学： • How can cathod-ray experiment prove the existence of electrons • What is the identity of each of the radiation rays? • How can the gold-foil experiment tell us the structure of an atom?