Homogeneous: Uniform composition throughout (e.g., Air, Brass, Sugar solution).
Bitter to taste, soapy to touch, and turn . According to Arrhenius, they release Hydroxyl ions ( OH−cap O cap H raised to the negative power ) in aqueous solution. pH value is greater than 7 . Water-soluble bases are called Alkalis (e.g., NaOHcap N a cap O cap H KOHcap K cap O cap H The pH Scale
Halogens (Fluorine, Chlorine, Bromine, Iodine) — highly electronegative. Fluorine is the most electronegative element. Bromine is the only non-metal that is liquid at room temperature.
Discovered by Ernest Rutherford (though Goldstein observed canal rays earlier). Neutron: Discovered by James Chadwick . chemistry notes ssc
Comprehensive Chemistry Notes for SSC Exams (2026 Edition) Chemistry is a core subject in the SSC (Staff Selection Commission) exams, featuring prominently in the General Science section. With a clear understanding of the fundamental concepts, you can secure high marks in this segment. These notes are curated for exams like , covering all essential topics for the 2026 cycle. 1. Important Topics for SSC Chemistry
. Memorize trends like electronegativity, atomic size, and ionization energy. Acids, Bases, and Salts
Formed by the complete transfer of electrons from a metal to a non-metal (e.g., Homogeneous: Uniform composition throughout (e
Two or more substances physically mixed in any ratio. No chemical bond is formed.
Compounds have a fixed composition; mixtures do not. Chapter 2: Atomic Structure (Core Basics) Atom: The basic unit of matter.
Metals that melt when kept on the human palm due to very low melting points. pH value is greater than 7
Substances formed by chemically combining two or more elements in a fixed ratio (e.g., Water, Carbon Dioxide).
For an effective SSC chemistry feature, prioritize concise, high-yield summaries