Grade 9 Chemistry Syllabus:1. Matter in Our Surroundings:- Definition of matter and its various forms
- Physical nature of matter
- Characteristics of particles of matter
- States of matter: solid, liquid, and gas
- Changes in states of matter
- Evaporation and condensation
- Sublimation and deposition
- Effect of temperature and pressure on states of matter
- Evaporation and cooling
2. Is Matter Around Us Pure?:- Definition of a pure substance
- Types of pure substances: elements and compounds
- Mixtures: homogenous and heterogeneous
- Separation techniques: filtration, evaporation, distillation, and chromatography
- Physical and chemical changes
- Tyndall effect
- Solution and its types: saturated, unsaturated, and supersaturated
- Concentration of solution
- Solubility and factors affecting it
- Suspension and colloids
3. Atoms & Molecules:- Definition of an atom
- Atomic mass and atomic number
- Dalton's atomic theory
- Laws of chemical combination: Law of conservation of mass, Law of definite proportions, and Law of multiple proportions
- Structure of an atom: electrons, protons, and neutrons
- Atomic models: Thomson's model and Rutherford's model
- Valency and valence electrons
- Ions: cations and anions
- Molecules: definition and representation
- Molecular mass and formula mass
- Writing chemical formulae and balancing chemical equations
4. Structure of an Atom:- Discovery of subatomic particles
- Electromagnetic spectrum
- Dual nature of matter: particle and wave nature
- Atomic spectra and energy levels
- Bohr's model of the atom
- Quantum mechanical model of the atom
- Electronic configuration and its significance
- Periodic table: modern periodic law, periods, and groups
- Trends in the periodic table: atomic size, ionization energy, electron affinity, and electronegativity
- Metals, non-metals, and metalloids
- Compounds formed by metals and non-metals
By following this syllabus, Grade 9 students will gain a comprehensive understanding of Chemistry, covering topics such as matter, pure substances, atoms, molecules, and the structure of an atom. The syllabus is designed to provide a strong foundation in Chemistry concepts and principles, preparing students for more advanced studies in the subject.
This course is helpful for the following exams: Grade 9