Some Basic Concepts of Chemistry
Madhya Pradesh Board · Class 11 · Chemistry
Complete topic list for Some Basic Concepts of Chemistry in Madhya Pradesh Board Class 11 Chemistry. Key concepts, sub-topics, and what to focus on for board exams.
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Topics in Some Basic Concepts of Chemistry
Nature of Matter and Classification
- Matter is anything that has mass and occupies space
- Three states of matter: solid, liquid, gas with different particle arrangements
- Matter can be classified as pure substances or mixtures
Measurement and Units
- SI system has 7 base units: metre (length), kilogram (mass), second (time), ampere (current), kelvin (temperature), mole (amount), candela (luminous intensity)
- Mass is amount of matter, weight is gravitational force on matter
- Volume units: m³ (SI), but cm³, dm³, and litre commonly used in chemistry
Scientific Notation and Significant Figures
- Scientific notation: N × 10ⁿ where N is between 1 and 10, n is integer
- Used for very large or very small numbers common in chemistry
- Significant figures indicate precision of measurements
Laws of Chemical Combination
- Law of Conservation of Mass: Mass neither created nor destroyed in chemical reactions
- Law of Definite Proportions: Elements in compounds always present in same mass ratio
- Law of Multiple Proportions: When elements form multiple compounds, mass ratios are simple whole numbers
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