). These compounds have high melting points and conduct electricity in molten or aqueous states.
A reaction that releases heat into its surroundings (e.g., burning of natural gas). 4. Acids, Bases, and Salts
Two or more substances physically mixed in any ratio. No chemical bond is formed.
Aloys are homogeneous mixtures of two or more metals, or a metal and a non-metal. Copper ( ) + Zinc ( Bronze: Copper ( Stainless Steel: Iron ( ) + Chromium ( ) + Nickel ( ) + Carbon ( Solder: Lead ( ) (Used for welding electronic wires) Duralumin: Aluminum ( ) + Copper ( ) + Magnesium ( ) + Manganese ( ) (Used in aircraft manufacturing) German Silver: Copper ( ) + Zinc ( ) + Nickel ( ) (Note: It contains zero silver!) 6. Chemistry in Everyday Life chemistry notes ssc
Heating natural rubber with Sulfur to improve its elasticity and strength.
Memorize common chemical names and formulas. NCERT is Key: Review Class 9 and 10 NCERT chemistry books.
Ultimate SSC Chemistry Notes: Master Your Exam Preparation Mastering Chemistry is essential for securing a high score in Staff Selection Commission (SSC) exams like CGL, CHSL, MTS, and CPO. Chemistry falls under the General Awareness section, where direct, fact-based questions are regularly asked. Having structured, comprehensive notes allows you to revise quickly and retain core concepts effectively. 1. Matter and Its States Aloys are homogeneous mixtures of two or more
Measures the acidity or alkalinity of a solution on a scale from 0 to 14. Neutral solution (Pure water). pH < 7: Acidic solution. pH > 7: Basic solution. Common pH Values Tested in SSC Human Blood: 7.35 – 7.45 (Slightly basic) Gastric Juice (Stomach Acid): 1.5 – 3.5 (Highly acidic) Lemon Juice: 2.2 – 2.4 Milk: 6.5 – 6.7 Acid Rain: pH less than 5.6 5. Metals, Non-Metals, and Metallurgy Key Facts About Metals
: Properties between metals and non-metals (e.g., Silicon, Germanium). 2. Acids, Bases, and Salts
This section applies theoretical concepts to daily life and is a favorite for question-setters. loss of hydrogen
Indefinite shape. Definite volume. Moderate intermolecular forces. (e.g., Water, Oil)
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.
Gain of oxygen, loss of hydrogen, or loss of electrons (LEO - Loss of Electrons is Oxidation).
Ultimate SSC Chemistry Notes: Master General Science for SSC CGL, CHSL, and MTS
