Introduction to Atomic and Periodic Chemistry

📋 Course Outline

1. Atomic structure and isotopes
2. Periodic table and electron configuration
3. Ionic compounds and formulae
4. Relative atomic mass and molecular mass
5. Chemical equations and balancing
6. Group 1 metals and Group 7 halogens
7. Ionic tests and flame colours
8. Noble gases and their uses

📖 1. Atomic structure and isotopes

🔑 Key Concepts & Definitions

• Atomic nucleus : The atomic nucleus is the central part of an atom containing protons and neutrons.
• Atomic number : The atomic number is the number of protons in an atom and fixes which element it is.
• Mass number : The mass number is the total number of protons plus neutrons in an atom.
• Isotopes : Isotopes are atoms of the same element with the same atomic number but different numbers of neutrons.

📝 Essential Points