Chemistry: Definition, Topics, Formulas, and Branches Explained

Chemistry is one of the most basic sciences. It enables us to understand the universe around us, from the air we inhale to the medications we consume. This page will provide all the information on chemistry, from formulas to branches of chemistry, among other things.

What Is Chemistry?

Chemistry can be defined as the science dealing with the composition, structure, properties, and behaviour of matter. It involves the interactions between different substances, combinations, and conversions of substances via chemical reactions. Also referred to as the central science, chemistry acts as a connecting link between physics and biology. It forms the basis of knowledge about the physical universe and life itself. It involves the study of atoms, molecules, compounds, and changes of energy in chemical reactions.

Chemistry is important in daily life. The discovery of many medicines, fertilisers, fuels, and other industrial products relies on chemistry. Modern civilisation would never have come to exist without chemistry. Major areas of chemistry are:

• The structure and properties of Atoms and Molecules.

• How substances bond and react with each other.

• The Energy Involved in Chemical Changes.

• The Synthesis of New Compounds and Materials.

Important Chemistry Topics

The scope of study in chemistry is extensive. As a student, teacher, or someone who simply wants to learn about chemistry, you must have an understanding of these basic topics if you want to establish a solid foundation in the field. Below you will find a list of the key topics within chemistry.

Organic Chemistry Topics

Organic Chemistry deals with compounds containing carbon. This is the largest branch of chemistry. Organic compounds are vital in the structure and functioning of living things and play a major role in the medicine, polymer, and food industries. Table of Contents of Organic Chemistry:

Inorganic Chemistry Topics

Inorganic chemistry studies all substances which lack C-H bonds. It involves the study of metallic elements, mineralogical chemistry, coordination complexes, and the chemistry of many other elements in the periodic table. The table below shows the major themes studied in inorganic chemistry.

Physical Chemistry Topics

Physical chemistry is an area that utilises the laws of physics to investigate the properties of chemicals. Physical chemistry studies the behaviour of matter at the molecular and atomic levels as well as chemical reactions. The following table outlines the essential topics in physical chemistry.

Chemistry Formulas

Chemistry formulas are scientific abbreviations. Chemistry formulas include substance composition, quantity relationships, and mathematical equations of chemical reactions. It is important to learn chemistry formulas to solve problems in all areas of chemistry. The following table provides important chemistry formulas grouped into categories.

Branches of Chemistry

Chemistry is a vast subject that is subdivided into several distinct disciplines. Each discipline deals with a particular kind of matter or chemical reaction. Collectively, all the disciplines account for the entire range of chemistry. The following table provides an overview of some important disciplines of chemistry.

Key Differences Between Organic, Inorganic, and Physical Chemistry

While organic, inorganic, and physical chemistry are all important divisions within the same subject, there exist notable differences between them in terms of emphasis, approaches, and utility. Familiarity with these differences enables students to select the appropriate specialisation and employ the appropriate concepts to solve problems.

The primary concern of organic chemistry is the study of carbon-containing molecules, and it forms an essential component of biology, pharmacology, and materials chemistry. Inorganic chemistry, on the other hand, includes the study of all substances except those based on C-H bonds. Physical chemistry is concerned with the quantitative and theoretical explanation of chemical behaviour using physical principles.

All these disciplines share connections and dependencies. Physical chemistry, for instance, explains the mechanisms and reasons behind organic and inorganic chemistry reactions. Biochemistry relies heavily on organic and inorganic chemistry.

Chemistry and Other Branches of Science

Chemistry is never isolated from any other subject. Chemistry is intimately linked to several other branches of science. This has led to the emergence of interdisciplinary subjects, which are revolutionising medicine, technology, and our knowledge of nature.

Why Chemistry Is Called the Central Science

Chemistry is known as 'the central science,' as its importance connects it with all other sciences. As physics deals with understanding the natural laws governing the behaviour of atoms, chemistry involves applying these laws to interactions and chemical reactions among atoms.
Chemistry, being at the core of science and technology, implies that any new development within the science of chemistry usually has a profound impact on science and technology in general.