CBSE-10

Class 10 Chemistry for the CBSE syllabus covers the fundamental principles of chemical reactions, properties of matter, and the unique role of carbon. The following is a summary of the core chapters and key concepts as per the latest NCERT guidelines: 

• Chemical Equations: Symbolic representation of reactions using formulas. Balancing is essential to satisfy the Law of Conservation of Mass.
• Types of Reactions:
  • Combination: Two or more reactants form one product (e.g., burning magnesium).
  • Decomposition: One reactant breaks into multiple products (Thermal, Electrolytic, or Photolytic).
  • Displacement: A more reactive element replaces a less reactive one from its compound.
  • Double Displacement: Exchange of ions between two compounds, often forming a precipitate.
  • Redox: Simultaneous occurrence of oxidation (gain of oxygen/loss of electrons) and reduction (loss of oxygen/gain of electrons).
• Daily Life Effects: Includes corrosion (rusting of iron) and rancidity (oxidation of fats/oils in food). 

• Properties:Acids are sour and turn blue litmus red ( H⁺ ions) ; Bases are bitter and turn red litmus blue( OH^- ions )
• pH Scale:Measures  H⁺ concentration from 0 (acidic) to 14 (basic). pH 7 is neutral.

• Neutralisation:\( Acid + Base \rightarrow Salt + Water \)
• Common Chemicals: Preparation and uses of Sodium Hydroxide, Bleaching Powder, Baking Soda, Washing Soda, and Plaster of Paris. 

• Physical Properties: Metals are lustrous, malleable, and ductile; non-metals generally lack these (except graphite and iodine).
• Chemical Properties: Metals form basic oxides and react with acids to produce hydrogen gas. Non-metals form acidic or neutral oxides.
• Reactivity Series: A list of metals arranged by reactivity used to predict displacement reactions.
• Ionic Bonding: Formation of compounds through the transfer of electrons from metals to non-metals. 

• Versatility: Carbon forms strong covalent bonds and exhibits catenation (forming long chains).
• Hydrocarbons: Saturated (alkanes) and unsaturated (alkenes, alkynes) compounds.
• Functional Groups: Groups like alcohols, aldehydes, ketones, and carboxylic acids that define chemical properties.
• Homologous Series: A series of compounds with the same functional group and similar chemical properties.
• Important Compounds: Study of Ethanol and Ethanoic acid properties. 

• Deals with the historical development of the Periodic Table (Dobereiner, Newlands, Mendeleev) and the Modern Periodic Table based on atomic numbers.