Three-dimensional tetrahedral structure. Bad conductor of electricity. Used in glass cutting.
Do not go deep into mechanisms; stick to basics.
Discovered by E. Goldstein (named by Rutherford). Carries a positive charge ( Coulombs). Mass is
Handwritten notes win for chemistry.
): Soft metals that can be cut with a knife; stored in kerosene due to high reactivity with air and water. Noble metals, highly unreactive, found in a free state. Non-Metals Non-metals are generally brittle and poor conductors. Bromine ( ): The only non-metal that is liquid at room temperature. Graphite: An allotrope of carbon that conducts electricity. chemistry notes ssc
Both oxidation and reduction occur simultaneously. D. Acids, Bases, and Salts
Hardest naturally occurring substance. Bad conductor of electricity. High refractive index (
Heterogeneous: Non-uniform composition; components remain distinct (e.g., Chalk in water, Oil and water, Muddy water). 2. Atomic Structure and Nuclear Chemistry
Which you are preparing for (CGL, CHSL, MTS, etc.)? Three-dimensional tetrahedral structure
Fixed shape and volume; high density; incompressible.
A weak electrostatic attraction between a hydrogen atom bonded to a highly electronegative atom (
Elements bond to achieve stability, resulting in diverse chemical reactions. Types of Bonds
| Property | Metals | Non-metals | |----------|--------|-------------| | Luster | Shiny | Dull | | Conductivity | Good | Poor | | Malleability | Yes | No | | Ductility | Yes | No | | Oxide nature | Basic | Acidic | Do not go deep into mechanisms; stick to basics
Focus on pH value and natural sources.
Here are some critical topics in chemistry that students should focus on for SSC exams:
Atoms having the same number of neutrons (e.g., Carbon-14 and Oxygen-16, both have 8 neutrons). 3. The Periodic Table
This is one of the highest-yielding topics for SSC examinations. Direct questions regarding properties and pH levels are common. Sour taste. Turn blue litmus paper red. Release Hydrogen ions ( H+cap H raised to the positive power ) in aqueous solutions. Strong Acids: HClcap H cap C l H2SO4cap H sub 2 cap S cap O sub 4 HNO3cap H cap N cap O sub 3 Weak Acids: CH3COOHcap C cap H sub 3 cap C cap O cap O cap H (Acetic acid), Citric acid. Bitter taste. Soapy touch. Turn red litmus paper blue. Release Hydroxyl ions ( OH−cap O cap H raised to the negative power
Discovered by James Chadwick . It is charge-neutral. Mass is Important Atomic Terms