Categories
Organic Chemistry

Disaccharides and Polysaccharides

Science > Chemistry > Biomolecules > Disaccharides and Polysaccharides In the last article, we have studied monosaccharides. In this article, we shall study disaccharides and polysaccharides. Disaccharides: Di-saccharides on hydrolysis give two molecules of monosaccharide. They on hydrolysis with dilute acids or enzymes yield two molecules of either the same or different monosaccharides. e.g. Cane sugar (Sucrose) […]

Categories
Organic Chemistry

Glucose and Fructose

Science > Chemistry > Biomolecules > Glucose and Fructose In the last article, we have seen what are carbohydrates and how are they classified. Based on hydrolysis behaviour the carbohydrates are classified into three types. a) Mono-Saccharides b) Oligo-Saccharides and c) Poly-Saccharides. In this article, we shall study monosaccharides in detail particularly glucose and fructose. […]

Categories
Organic Chemistry

Carbohydrates

Science > Chemistry > Biomolecules > Introduction to Carbohydrates All those simple or complex organic and inorganic substances found in different living forms are collectively called as biomolecules. Biomolecules can be grouped into two types micro and macromolecules. The micro molecules have moderate to low molecular mass.  e.g. sugars, amino acids, and their derivatives, vitamins, […]

Categories
Physical Chemistry

Introduction to Chemical Kinetics

Science > Chemistry > Chemical Kinetics > Introduction to Chemical Kinetics In this article, we shall discuss the concept of chemical kinetics, rate of reactions, and types of reactions on the basis of their rates. Rate of Reaction: The branch of chemistry, which deals with the rate of chemical reactions, the factors affecting the rate […]

Categories
Physical Chemistry

Dual Nature of Radiations

Science > Chemistry > Atomic Structure > Dual Nature of Radiations Light and other electromagnetic radiations have dual nature viz: the particle nature and the wave nature. Wave Nature of Radiations: Radiation is the form of energy, which can be transferred from one point to another point in space. Radiations are considered to be transmitted by wave […]

Categories
Physical Chemistry

Heisenberg’s Uncertainty Principle

Science > Chemistry > Atomic Structure > Heisenberg’s Uncertainty Principle In this article, we shall study Heisenberg’s uncertainty principle, the concept of quantum numbers, and the model of an atom based on the quantum numbers. Heisenberg’s Uncertainty Principle: Werner Heisenberg a German physicist in 1927, stated the uncertainty principle which is the consequence of dual behaviour of […]

Categories
Physical Chemistry

Quantum Numbers and Quantum Model of an Atom

Science > Chemistry > Atomic Structure > Quantum Numbers and Quantum Model of an Atom In this article, we shall study the concept of quantum numbers and the model of an atom based on the quantum numbers. Concept of Quantum Numbers: In 1926, Erwin Schrodinger put forward a theory of atom called as a quantum […]

Categories
Physical Chemistry

Quantum Numbers and Shapes of Orbitals

Science > Chemistry > Atomic Structure > Quantum Numbers and Shapes of Orbitals In this article, we shall study the concept of quantum numbers and different types of orbitals and their shapes. Difference Between Shell, Subshell, and Orbital: All electrons that have the same value for n (the principal quantum number) are in the same […]

Categories
Physical Chemistry

Electronic Configuration

Science > Chemistry > Atomic Structure > Electronic Configuration The distribution of electrons in various shells and orbitals of an atom is known as electronic configuration. Generally electronic configuration is given by nlx. Where n is shell number, l is subshell and x are the number of electrons. Aufbau Principle: The arrangement of the electrons […]

Categories
Physical Chemistry

Rutherford’s Atomic Model

Science > Chemistry > Atomic Structure > Rutherford’s Atomic Model In this article, we shall study Thomson’s model of an atom and its deficiencies and Rutherford’s atomic model and its deficiencies. Thomson’s Model of an Atom: J. J. Thomson, in 1898, proposed that an atom possesses a spherical shape (radius approximately 10–10 m) in which the positive charge […]