Unit 458 Comprehensive Outline

1. Introduction to the Periodic Table

• History and development of the periodic table
  • Contributions of Mendeleev and others
• Organization of elements
  • Periods and groups
  • Metals, nonmetals, and metalloids
• Periodic trends and properties
  • Atomic radius, ionization energy, electronegativity
  • Reactivity trends across periods and groups

2. Atomic Structure and Bonding

• Atomic structure
  • Protons, neutrons, electrons
  • Atomic number and mass number
• Electron configuration
  • Energy levels, orbitals, and shells
  • Aufbau principle, Pauli exclusion principle, Hund’s rule
• Types of chemical bonds
  • Ionic bonding: formation, properties
  • Covalent bonding: shared electrons, polar vs nonpolar
  • Metallic bonding: electron sea model, properties

3. Types of Chemical Reactions

• Classification of reactions
  • Synthesis (combination) reactions
  • Decomposition reactions
  • Single replacement (displacement) reactions
  • Double replacement reactions
  • Combustion reactions
• Balancing chemical equations
  • Law of conservation of mass
  • Step-by-step balancing techniques

4. Stoichiometry

• Mole concept
  • Avogadro’s number
  • Molar mass calculations
• Stoichiometric calculations
  • Mole-to-mole, mass-to-mass, volume-to-volume conversions
• Limiting reactants and excess reactants
• Percent yield and theoretical yield

5. Acids and Bases

• Properties of acids and bases
• Definitions and theories
  • Arrhenius, Bronsted-Lowry, Lewis concepts
• pH scale and calculations
• Neutralization reactions
• Buffers and their importance in pH maintenance

6. Redox Reactions

• Oxidation and reduction concepts
  • Oxidation numbers and rules
• Identifying redox reactions
• Balancing redox equations
• Applications
  • Everyday life examples
  • Industrial processes

7. Organic Chemistry Basics

• Introduction to organic molecules
• Hydrocarbons
  • Alkanes, alkenes, alkynes
• Functional groups
  • Alcohols, carboxylic acids, amines, etc.
• Isomerism
  • Structural and stereoisomerism
• Common organic reactions
  • Addition, substitution, elimination

8. Polymers and Biomolecules

• Polymers
  • Types: natural vs synthetic
  • Polymerization processes
• Biomolecules
  • Carbohydrates: structure and function
  • Lipids: types and roles
  • Proteins: amino acids and structure levels
  • Nucleic acids: DNA and RNA overview
• Role of biomolecules in living organisms

9. Environmental Chemistry

• Human impact on environment
  • Air pollution: sources and effects
  • Water pollution: contaminants and treatment
• Global warming and climate change
• Ozone layer depletion
• Sustainable chemistry practices
  • Green chemistry principles
  • Waste reduction and recycling

10. Nuclear Chemistry

• Structure of the nucleus
• Types of nuclear reactions
  • Radioactive decay (alpha, beta, gamma)
  • Nuclear fission and fusion
• Balancing nuclear equations
• Applications
  • Medicine: radiotherapy, medical imaging
  • Energy production: nuclear reactors
  • Environmental monitoring