Chemistry: Notes, Periodic Table, Chemical Reactions, Study Guides

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Chemistry is one of the three major sub-disciplines of science. Chemistry is the study of matter present in the universe, the properties of matter, how substances are able to transform and evolve to form new substances. Chemistry is considered a central science as it plays a foundational role in the understanding of scientific disciplines (basic and applied) at fundamental levels.
       Chemical Formula
Chemical Formula
 Check Also: CBSE Class 12 Chemistry: Question Bank

Aspects of Chemistry 

  • Periodic Table is the tabular presentation of all Chemical Elements known to mankind. It contains information about the elements such as atomic mass, weight, and chemical symbol. Elements are organized in rows (called periods) and columns (called groups) in increasing atomic number. The first version of the Periodic Table was developed by Dmitri Mendeleev in 1896. 

Periodic Table

Periodic Table

  • Chemical Reaction is a process where one or more substances (reactants), are converted to different substances (products) via breakage and formation of chemical bonds. Chemical Equation is used to describe a chemical reaction. The Chemical Equation are a symbolic representation of the identities and quantites of the substances involved in the chemical reaction.
Chemical Reactions
Chemical Reactions
  • Atoms and Molecules are the foundational blocks of all creation. Atoms are known as the “basic building blocks of matter”. Molecules are formed when multiple atoms join and form a bond together. The study of atoms and molecules is essential to the study of the universe. It allows scientists a deeper understanding of how all matter functions and what properties are exhibited by various substances.
  • Chemistry is an integral part of life and can be found everywhere from the functioning of the human body to the formation of stars in distant universes. The presence of chemistry and chemical reactions are everywhere. As students, you are introduced to the study of chemistry from the primary level itself and are required to study until at least Grade 12. Given below are a number of Study Guides essential to Chemistry at all levels of education.

List of Articles

The list of all chemistry articles is given below. Click on a category to acess all articles. 

Important Reactions

Chemical Compounds

Periodic Table

Difference Between Articles

Chemical Formulas

Solid State

Solutions

p Block Elements

Haloalkanes and Haloarenes

Alcohols, Phenols and Ethers

Biomolecules

Electrochemistry

Chemical Kinetics

Surface Chemistry 

Coordination Compounds 

Aldehydes, Ketones and Carboxyllic Acids 

Amines 

Chemical Reactions and Equations 

Metals and Non-Metals 

Acids Bases and Salts 

Carbon and its Compounds 

Periodic Classification of Elements

Some Basic Concepts of Chemistry

Structure of an Atom 

Classification of Elements and Periodicity in Properties 

Chemical Bonding and Molecular Structure 

Thermodynamics 

States of Matter 

Equilibrium

Redox Reactions

Hydrogen 

Organic Chemistry: Some Basic Principles and Techniques

Hydrocarbons 

Chemistry Important Topics


CBSE Class 11 & 12 Study Guides

CBSE CLASS XII Related Questions

  • 1.

    The reaction

    suggests that phenol is :

      • Basic
      • Neutral
      • Acidic
      • Amphoteric

    • 2.
      Out of KMnO$_4$ and K$_2$MnO$_4$, which one is paramagnetic and why?


        • 3.
          Deficiency of vitamin B$_1$ causes the disease :

            • Convulsions
            • Beri-Beri
            • Fissuring at corners of mouth and lips (Cheilosis)
            • Muscular weakness

          • 4.
            Why is the ability of oxygen greater than fluorine to stabilise higher oxidation states of transition metals?


              • 5.
                Assertion (A): Aquatic species are more comfortable in cold water than in warm water.
                Reason (R): Solubility of oxygen gas in water decreases with increase in temperature.

                  • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A).
                  • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A).
                  • Assertion (A) is true, but Reason (R) is false.
                  • Assertion (A) is false, but Reason (R) is true.

                • 6.
                  Anilinium hydrogen sulphate on heating at 453–473 K produces which of the following as a major product ?

                    • 2-aminobenzene sulphonic acid
                    • benzene sulphonic acid
                    • 2-aminobenzoic acid
                    • sulphalinic acid

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