Class 9 – Science Notes

Matter States of Matter Sublimation Characteristics of particle nature of matter Change in state of matter Diffusion Evaporation Evidences of particle in matter and their motion Latent Heat Water vapours in air

Is Matter Around us Pure Colloids Solution Suspension Compound Concentration Mixtures Separation of mixture Elements Physical and chemical change

Ionic Compounds Molecules Atomic Mass Molecular Mass Ions Dalton’s Atomic Theory Gram Molecular Mass Mole Concept Valency of Ion

J.J. Thomson model of an atom Isobars Isotopes Structure of an atom Arrangement of electrons in the atoms Rutherford model of an atom Bohr’s model of an atom Discovery of Neutron Discovery of electron Discovery of Proton Valency of Ion

Golgi Apparatus Lysosomes Cell organelles-plasma membrane Plastids Cytoplasm Mitochondria Endoplasmic reticulum Nucleus Fundamental units of life

Tissue Animal tissue Meristematic tissue Complex tissue Connective tissue Muscular tissue Epithelial tissue Nervous tissue Permanent tissue Vacuoles

Motion Velocity Acceleration Equation of motion Equation of motion by graphical method Graphical representation of motion

Conservation of momentum Force Newton’s first law of motion Newton’s second law of motion Newton’s third law of motion

Gravitation Mass, weight, pressure, thrust Pressure in liquid Relative density

Work Energy Forms of energy Transformation of energy Law of conservation of energy Power

longitudinal waves Transverse wave Characteristics of waves Speed of sound in different medium Reflection of sound Reverberation Sonar Human ear

Crop Rotation Nutrient management, Manures and Fertilisers Irrigation, Mixed Cropping, Intercropping and Crop Rotation Genetic Manipulation And Crop Improvement Crop Protection Management