Chemistry Notes Ssc -
Natural Acids: Citric acid (lemons), Acetic acid (vinegar), Formic acid (ant stings). Bitter taste, turn red litmus blue, pH > 7.
Metals are malleable and ductile; Non-metals are generally brittle.
Use tricks to remember the Reactivity Series or the Periodic Table groups. chemistry notes ssc
Know the basic properties (shape, volume, compressibility).
Finding high-quality exams (like CGL, CHSL, MTS, or CPO) is a game-changer for your preparation. Chemistry can be tricky because it involves a mix of conceptual understanding and rote memorization of facts, formulas, and periodic table trends. Natural Acids: Citric acid (lemons), Acetic acid (vinegar),
Diamond (hardest), Graphite (good conductor), and Fullerene. Hydrocarbons: Alkanes (Single bond: CnH2n+2cap C sub n cap H sub 2 n plus 2 end-sub Alkenes (Double bond: CnH2ncap C sub n cap H sub 2 n end-sub Alkynes (Triple bond: CnH2n−2cap C sub n cap H sub 2 n minus 2 end-sub Gases: LPG: Mainly Butane and Propane. CNG: Mainly Methane. 8. Chemistry in Everyday Life SSC loves "practical" chemistry questions. Glass: Made of silica ( SiO2cap S i cap O sub 2 Fertilizers: NPK (Nitrogen, Phosphorus, Potassium).
Matter is anything that has mass and occupies space. SSC frequently asks about phase changes. Use tricks to remember the Reactivity Series or
The fourth state of matter (found in stars/fluorescent bulbs). Bose-Einstein Condensate: The fifth state of matter. Key Processes: Sublimation: Solid to Gas (e.g., Camphor, Dry Ice). Deposition: Gas to Solid.
Latent Heat: Heat required to change the state without changing temperature. 2. Atomic Structure Understanding the building blocks of matter is crucial. Proton (discovered by Ernest Rutherford/Goldstein). Electron (J.J. Thomson). Neutron (James Chadwick). Atomic Terms: Atomic Number (Z): Number of protons. Mass Number (A): Protons + Neutrons.
Noble Gases (Inert gases like Helium, Neon, Argon). Trends: Atomic size decreases across a period (left to right). Electronegativity increases across a period. 4. Chemical Bonding and Reactions Ionic Bond: Transfer of electrons (e.g., NaCl). Covalent Bond: Sharing of electrons (e.g., H2Ocap H sub 2 cap O Oxidation vs. Reduction: Oxidation is the loss of electrons/gain of oxygen. Reduction is the gain of electrons/loss of oxygen. Redox Reaction: When both happen simultaneously. 5. Acids, Bases, and Salts This is a high-yield topic for SSC exams. Acids: Sour taste, turn blue litmus red, pH < 7.
