chemistry ncert 11 ch1

Chemistry Applications in Agriculture and Food:

Chemistry Applications in Agriculture and Food:

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Chemistry Applications in Health and Sanitation:

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Chemistry's Role in Saving the Environment:

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Physical Classification of Matter:

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Chemical Classification of Matter:

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Definitions of Basic SI Units:

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Mass vs

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Properties of Matter and Their Measurements:

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Uncertainty in Measurements:

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Significant Figures:

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Dimensional Analysis

A method used to convert units from one system to another, also known as factor label method or unit factor method.

Laws of Chemical Combinations

Five basic laws governing the combination of elements to form compounds, including Law of Conservation of Mass, Law of Definite Proportions, Law of Multiple Proportions, Gay Lussac’s Law of Gaseous Volumes, and Avogadro’s Law.

Atomic Mass

The mass of an element relative to the 12C isotope of carbon, expressed in atomic mass units (u).

Avogadro's Number

The number of atoms, molecules, or particles in a system, represented by 6.022 x 10^23.

Empirical Formula

The formula showing the simplest whole number ratio of atoms of different elements in a compound.

Molecular Formula

The formula indicating the actual ratio of atoms of various elements in one molecule of a compound.

Stoichiometry

The quantitative study of reactants and products in a chemical reaction, involving calculations of masses or volumes of substances.