Chemistry For Grade 8
Introduction
Grade 8 Chemistry expands on fundamental concepts, introducing atomic theory, molecular structures and periodic trends of the elements. Students explore chemical bonding, reaction types and the role of catalysts in speeding up reactions. They study acids, bases, pH and neutralization reactions, as well as conservation of mass in chemical processes. The curriculum includes an introduction to organic chemistry, simple hydrocarbons and environmental chemistry, examining pollution and sustainable practices. Through experiments and real-world applications, students strengthen analytical and experimental skills.
All Chapters & Topics
1. Introduction to Chemistry
- 1.1. Nature and scope of chemistry
- 1.2. Importance of chemistry in daily life
- 1.3. Chemistry and its relation with other sciences
- 1.4. The role of chemistry in industry, medicine and the environment
- 1.5. Scientific investigation and experimental methods in chemistry
2. Matter and its properties
- 2.1. Definition and classification of matter
- 2.2. Physical and chemical properties of matter
- 2.3. Law of conservation of matter
- 2.4. Extensive and Intensive Properties of Matter
- 2.5. Kinetic molecular theory of matter
- 2.6. States of matter: solids, liquids, gases, plasmas, and Bose-Einstein condensates
- 2.7. Changes in state and energy are involved
- 2.8. Diffusion and Brownian motion
3. Elements, Compounds, and Mixtures
- 3.1. Definition and differences between elements, compounds, and mixtures
- 3.2. Atomic Structure and Atomic Number
- 3.3. Chemical symbols and formulas
- 3.4. Trends in the Periodic Table (Groups and Periods)
- 3.5. Classification of Elements: Metals, Nonmetals and Metalloids
- 3.6. Rare Earth Elements and Transition Metals
- 3.7. Types of mixtures: homogeneous and heterogeneous
- 3.8. Separation of Mixtures Using Physical and Chemical Methods
4. Separation Techniques
- 4.1. Filtration, Sedimentation and Decantation
- 4.2. Evaporation and crystallization
- 4.3. Distillation and Fractional Distillation
- 4.4. Chromatography and its applications
- 4.5. Sublimation in the purification of compounds
- 4.6. The role of centrifugation in biochemical processes
5. Atomic Structure
- 5.1. Dalton's atomic theory
- 5.2. Structure of the atom: protons, neutrons and electrons
- 5.3. Bohr's atomic model
- 5.4. Introduction to Quantum Mechanical Model
- 5.5. Electron Configuration and Energy Levels
- 5.6. Excitation and emission spectra
- 5.7. Isotopes and their applications
6. Periodic Table and Chemical Trends
- 6.1. History and Development of the Periodic Table
- 6.2. Modern periodic law
- 6.3. Periodicity and trends in atomic and ionic sizes
- 6.4. Ionization Energy, Electron Affinity and Electronegativity
- 6.5. Introduction to Lanthanides and Actinides
- 6.6. Application of periodic trends in chemistry
7. Chemical Bonding and Molecular Structure
- 7.1. Types of chemical bonds: ionic, covalent and metallic bonds
- 7.3. Polar and Nonpolar Molecules
- 7.4. Hydrogen bonding and its applications
- 7.5. Intermolecular forces: dipole-dipole, London dispersion force
8. Chemical Reactions and Stoichiometry
- 8.1. Chemical Equations and Balance
- 8.2. Types of Chemical Reactions: Combination, Decomposition, Displacement and Redox
- 8.3. Introduction to stoichiometry and the mole concept
- 8.4. Limiting reactant in chemical equations
- 8.5. Reaction rate, catalyst, and factors affecting reaction rate
9. Acids, Bases and Salts
- 9.1. Definition and Properties of Acids and Bases
- 9.2. Strong vs. Weak Acids and Bases
- 9.3. pH Scale and pH Calculation
- 9.4. Neutralization reactions
- 9.5. Buffer solutions and their importance
- 9.6. Applications of Acids, Bases and Salts in Daily Life
10. Solutions and Solubility
- 10.1. Definition of Solution, Solute, and Solvent
- 10.2. Factors Affecting Solubility
- 10.3. Concentration units: molarity and molality
- 10.4. Saturated, unsaturated and supersaturated solutions
- 10.5. Concept of osmosis and reverse osmosis
- 10.6. Concentrative properties of solutions
11. Gases and Gas Laws
- 11.1. Properties of gases
- 11.2. Introduction to Ideal and Real Gases
- 11.3. Boyle's Law, Charles' Law and Avogadro's Law
- 11.4. Ideal Gas Equation and Its Applications
- 11.5. Application of Gas Laws in Real Life
12. Thermochemistry and energy transformation
- 12.1. Energy in Chemical Reactions
- 12.2. Exothermic vs. Endothermic Reactions
- 12.3. Heat and Enthalpy Changes
- 12.4. Calorimetry and heat transfer in reactions
13. Metals and Nonmetals
- 13.1. Physical and Chemical Properties of Metals and Nonmetals
- 13.2. Reactivity Series of Metals
- 13.3. Corrosion and its prevention
- 13.4. Extraction of metals from ores
- 13.5. Uses of metals and non-metals in daily life
14. Introduction to Organic Chemistry
- 14.1. Characteristics of carbon and organic compounds
- 14.2. Functional groups and their importance
- 14.3. Simple Hydrocarbons: Alkenes, Alkenes and Alkynes
- 14.4. Isomerism in organic compounds
- 14.5. Introduction to polymers and their uses
15. Environmental Chemistry and Sustainability
- 15.1. Green Chemistry Principles
- 15.2. Effects of Chemical Pollution on Ecosystems
- 15.3. Acid rain and its effects
- 15.4. Ozone layer depletion and global warming
- 15.5. Waste Management and Recycling in Chemistry