Chemistry Notes Ssc

The energy required to remove an electron. Increases across a period and decreases down a group.

SSC often repeats questions on ores, alloys, and acids.

For SSC (Secondary School Certificate) students, Chemistry is a high-scoring subject if you focus on the fundamental concepts and repeated exam patterns. Here is a useful summary of core topics and study tips to help you ace your preparation. 🧪 English Version notes||SSC Chemistry||Hand Notes

Solid, Liquid, Gas, Plasma, Bose-Einstein Condensate. chemistry notes ssc

) is the only non-metal that is liquid at room temperature. (an allotrope of carbon) is an exception that conducts electricity. Important Ores of Metals Iron: Hematite, Magnetite, Siderite Aluminum: Bauxite, Cryolite Copper: Copper Pyrites, Malachite Mercury: Cinnabar ( Lead: Galena ( Zinc: Zinc Blende ( ), Calamine Important Alloys and Their Composition Brass: Copper ( ) + Zinc ( Bronze: Copper ( Stainless Steel: Iron ( ) + Chromium ( ) + Nickel ( ) + Carbon ( Solder: Lead ( German Silver: Copper ( ) + Zinc ( ) + Nickel ( ) (Note: It contains 0% silver!) 6. Carbon and Its Compounds

By following these chemistry notes SSC, you can master the subject and achieve your goal of cracking the SSC exam. Good luck!

Formed by cooling a gas of extremely low density to super-low temperatures. Chemical Classification The energy required to remove an electron

Formed by neutralization reactions (Acid + Base → Salt + Water). pH Scale: Developed by Sorensen; ranges from 0 to 14. 5. Metals and Non-Metals Metals: Malleable, ductile, and good conductors. Mercury is the only metal liquid at room temperature. Non-Metals: Brittle and poor conductors. Bromine is the only non-metal liquid at room temperature. Graphite (Carbon) is a non-metal that conducts electricity. Alloys: Brass: Copper + Zinc Bronze: Copper + Tin Steel: Iron + Carbon Stainless Steel: Iron + Chromium + Nickel 6. Carbon and Its Compounds

Matter is anything that has mass and occupies space. It is classified based on physical and chemical properties. Physical Classification

Proposed by Henry Moseley . It organizes elements by increasing atomic number . It consists of 7 Periods (horizontal rows) and 18 Groups (vertical columns). Periodic Trends (Left to Right vs. Top to Bottom) Across a Period (Left to Right) Down a Group (Top to Bottom) Atomic Radius Decreases (due to increased nuclear charge) Increases (due to addition of new shells) Ionization Energy Increases (harder to lose electrons) Decreases (easier to lose electrons) Electron Affinity Electronegativity Increases (Fluorine is the most electronegative) Metallic Character 4. Chemical Bonding and Radioactivity ) is the only non-metal that is liquid at room temperature

Trends in periodic properties (electronegativity, atomic size).

18 Groups (vertical) and 7 Periods (horizontal). Group 1: Alkali Metals. Group 17: Halogens (most reactive non-metals).

Metals are malleable, ductile, sonorous, and good conductors of heat and electricity. The only metal that is liquid at room temperature. Sodium ( ) & Potassium (

Discovered by Ernest Rutherford (credited via gold foil experiment, though Goldstein observed anode rays). It carries a positive charge ( Coulombs).

Substances formed when two or more elements chemically combine in a fixed ratio (e.g., Pure Water ( H2Ocap H sub 2 cap O ), Carbon Dioxide ( CO2cap C cap O sub 2