Periodic Table and Periodicity

Discover 5 Chemistry Branches: Definitions & Examples

Chemistry is a science that studies different elements, compounds, and molecules at the atomic and molecular level. This discipline plays a vital role in our daily lives as it helps us understand the world around us. Chemical analysis is an important aspect of chemistry that involves the identification and quantification of chemicals in various substances. Chemical technicians are professionals who specialize in performing chemical analysis and conducting research to determine the chemical composition of materials. There are major branches of chemistry that are divided into sub-branches, each focusing on different disciplines such as nuclear chemistry, organic chemistry, and physical chemistry.

Nuclear chemistry is a branch of chemistry that studies the behavior of atoms and molecules in nuclear reactions. It involves studying radioactive isotopes to determine their properties and how they decay over time. Chemical technicians who specialize in nuclear chemistry often work in research facilities or power plants, analyzing chemical elements and conducting chemical analysis on chemicals.

Organic chemistry is another main branch of chemistry that focuses on the study of carbon-based compounds. Organic chemists, chemical technicians, and chemical analysts examine the structure, properties, and chemical composition of these chemicals. They also develop new synthetic methods for creating these compounds to improve our everyday lives.

Physical Chemistry is a branch of science that deals with the study of physical properties and behavior of matter, including chemicals. It uses principles from physics such as thermodynamics, quantum mechanics, and statistical mechanics to investigate chemical systems at the molecular level. This field is relevant to medical scientists and pharmacologists who conduct studies on the physical and chemical properties of drugs to develop effective treatments.

Analytical Chemistry focuses on developing methods for chemical analysis of substances to determine their composition or concentration. Analytical chemists, chemical technicians, and chemical engineers use various techniques like chromatography, mass spectrometry, and electrochemistry to analyze samples and identify chemical elements.

Biochemistry combines biology with chemistry to study biological processes at the molecular level. Biochemists and chemical technicians work on understanding how living organisms function by examining biomolecules like proteins, carbohydrates, lipids, DNA/RNA through chemical analysis. Chemical engineers also play a role in the field by designing and optimizing processes for the production of biomolecules. Medical scientists utilize biochemistry to develop new drugs and treatments for various diseases.

Importance and Relevance of Studying the Different Branches of Chemistry

Comprehensive Understanding of Matter and Its Properties

Studying the different branches of chemistry provides students with a comprehensive understanding of matter and its properties. Chemical analysis is an essential part of this field of study, as it helps chemical technicians and engineers to identify and quantify the substances present in a sample. Chemistry studies the composition, structure, properties, and reactions of matter, making it a fundamental science for understanding everything around us, from the food we eat to the air we breathe.

Chemistry plays a vital role in various fields such as medicine, engineering, environmental science, and forensic investigation. Forensic chemists in laboratories use chemistry to analyze evidence and help solve crimes. Pharmacologists use chemistry to develop new drugs in laboratory settings that can cure diseases or alleviate symptoms. Engineers use chemistry to design more efficient energy sources that can power our homes and businesses without harming the environment. Environmental scientists use chemistry to understand how pollutants affect ecosystems and find ways to mitigate their impact.

Practical Applications of Chemistry

Petrochemical industry
Petrochemical industry

The practical applications of chemistry are vast and varied. From developing new materials for construction to designing more effective fertilizers for agriculture, chemistry has numerous real-world applications. Chemical engineers and food scientists can work in laboratories to study the different branches of chemistry, gaining hands-on experience in these practical applications. Forensic chemists also play a crucial role in solving crimes by analyzing evidence in the lab.

One example is green chemistry, which aims to design chemical products and processes that reduce or eliminate hazardous substances. Green chemistry has become increasingly important in recent years as society becomes more aware of the negative impact that some chemicals have on human health and the environment. Food scientists, forensic chemists, and researchers in laboratories are also utilizing green chemistry principles to develop safer and more sustainable methods for food production and forensic analysis.

Research in Chemistry

Research in chemistry is constantly evolving, with new discoveries and breakthroughs being made every day. Chemical engineers, forensic chemists, and food scientists can contribute to this ongoing research by studying the different branches of chemistry and conducting experiments in laboratories. These professionals can make significant contributions to the field by utilizing their expertise in specialized areas of chemistry.

For example, organic chemists study carbon-based compounds such as plastics, pharmaceuticals, and fuels. Inorganic chemists study non-carbon-based compounds such as metals and minerals used in electronics or catalysis. Analytical chemists focus on identifying chemical compounds using advanced instrumentation techniques such as mass spectrometry or chromatography. Bioinorganic chemistry is a subfield that combines the principles of biology and inorganic chemistry to study metal ions in biological systems. Chemistry professors often conduct research in specialized laboratories to advance the field of chemistry. Food scientists use chemistry principles to understand the composition and properties of food and develop new food products in laboratories.

Job Growth and Average Job Outlook


A strong foundation in the different branches of chemistry can lead to a fulfilling and lucrative career for chemical engineers, laboratories, scientists, and researchers. Job growth and average job outlook for those with a degree in chemistry are promising, with many opportunities available in industries such as pharmaceuticals, biotechnology, materials science, and research.

According to the Bureau of Labor Statistics, employment of chemists and chemical engineers is projected to grow 7 percent from 2019 to 2029, faster than the average for all occupations. Chemistry professors can also expect to see growth in job opportunities. The median annual salary for chemists and chemical engineers was $77,630 in May 2020, with potential for higher salaries in specialized fields such as laboratories.

Inorganic Chemistry: Definition and Examples

Inorganic chemistry is a fascinating branch of chemistry where scientists research the properties and behavior of inorganic compounds. Inorganic chemists work to understand the structures, reactions, and uses of these compounds, which do not contain carbon-hydrogen bonds. This field has many practical applications for engineers in areas such as materials science, catalysis, and environmental science.

Understanding Inorganic Chemistry

One key aspect of inorganic chemistry for scientists is understanding the fundamental differences between organic and inorganic compounds through research work. While organic compounds contain carbon-hydrogen bonds, inorganic compounds do not. Instead, they typically contain metals or other elements from the right-hand side of the periodic table. This knowledge is also important in the study of food chemistry.

Inorganic chemists, scientists, and chemistry professors conduct research on these compounds to understand their unique properties and how they interact with other substances. For example, some inorganic compounds are highly reactive and can be used as catalysts by engineers to speed up chemical reactions. Others may be useful for creating new materials with specific properties.

Applications of Inorganic Chemistry

The applications of inorganic chemistry are vast and varied. Scientists and engineers work with inorganic compounds to create new materials with specific properties such as strength or conductivity. For example, titanium dioxide is commonly used as a pigment in paints due to its ability to absorb UV light. In addition, inorganic chemistry also plays a crucial role in the food industry, where additives such as calcium phosphate are used to fortify food products with essential nutrients.

Another important application of inorganic compounds is catalysis, which is the process of using substances to speed up chemical reactions without being consumed themselves. Chemistry professors and scientists often work on developing new catalysts for various applications, such as converting harmful pollutants from automotive exhaust systems into less harmful gases. In addition, inorganic compounds are also used as catalysts in the food industry to improve the efficiency of food processing and production.

Bioinorganic Chemistry

A subfield within inorganic chemistry is bioinorganic chemistry – which focuses on studying the role of inorganic elements within biological systems. Many essential biological processes rely on metals like iron or zinc to function correctly; therefore, scientists conduct research to understand how these elements work with living organisms. This knowledge is critical for developing new medicines or treatments and even improving food quality.

Examples of Inorganic Compounds

Some examples of inorganic compounds include metals, salts, acids, and bases. Chemistry professors and scientists often work with these compounds to understand their properties and potential applications. Engineers also utilize inorganic compounds in various industries, such as using metals for construction or designing chemical processes that involve acids and bases. Salts like sodium chloride (table salt) are essential for human health and are widely used in food preservation. Acids and bases play a crucial role in many chemical reactions, such as the reaction between hydrochloric acid and sodium hydroxide to form table salt.

Organic Chemistry: Definition and Examples

Organic Fertilizers
Organic Fertilizers

Organic chemistry is a fascinating field of study that focuses on carbon-based compounds and their properties. Carbon is unique in its ability to form strong covalent bonds with other atoms, allowing for an incredible diversity of organic compounds. Scientists and engineers work in this field to develop new materials for a wide range of applications, including food production. In this section, we will explore the definition of organic chemistry and highlight some examples of its practical applications in the food industry.

What is Organic Chemistry?

Organic chemistry is the scientific study of carbon-based compounds, including their structure, properties, and reactions. These compounds are found in living organisms and can also be synthesized in laboratories. Organic chemistry has numerous subfields, including biochemistry, polymer chemistry, and organometallic chemistry. Scientists work extensively in this field to understand the properties of organic compounds, which are essential in food production. Engineers also play a vital role in developing new techniques to synthesize and process organic compounds for various applications.

One important aspect of organic chemistry for scientists and engineers is the concept of functional groups. A functional group is a specific arrangement of atoms within a molecule that determines its chemical behavior. For example, alcohols contain a hydroxyl (-OH) group that makes them more reactive than other types of organic compounds. Understanding how functional groups work is essential for the average chemist to succeed in their field.

Examples of Organic Compounds

Organic compounds are incredibly diverse and include everything from simple molecules like methane (CH4) to complex polymers like DNA. Some common examples of organic compounds that chemistry professors and scientists work with on an average day include:

  • Carbohydrates: These are sugars and starches that provide energy for living organisms. Scientists who work in this field can expect a good salary, according to BLS.
  • Proteins: These large molecules made up of amino acids work to perform various functions in the body. Scientists have found that on average, the employment of those working in the field of protein research is expected to grow according to the BLS.
  • Lipids: These fats and oils serve as a source of energy storage for the average person. BLS reports that scientists work with lipids.
  • Hydrocarbons: These simple organic molecules consisting only of hydrogen and carbon atoms are the focus of scientists’ work. On average, according to BLS data, scientists spend a significant amount of time studying hydrocarbons.

Organometallic Chemistry

Organometallic chemistry is a subfield of organic chemistry that scientists work on, dealing with compounds containing both carbon and metal atoms. These types of compounds have unique properties due to the interaction between the metal center and the surrounding ligands.

One important application of organometallic chemistry is in catalysis. Many industrial processes rely on catalysts to speed up chemical reactions, and organometallic compounds can work as highly effective catalysts due to their unique properties. For example, the compound Wilkinson’s catalyst (RhCl(PPh3)3) can work wonders in the production of pharmaceuticals.

Practical Applications of Organic Chemistry

Organic chemistry has numerous practical applications in everyday life. For example, many average pharmaceuticals are organic compounds that have been synthesized in laboratories. Other common uses of organic compounds include:

  • Plastics: The average types of plastics are made from organic compounds like ethylene and propylene, according to the bls.
  • Fuels: Gasoline and other fuels, on average, are made from hydrocarbons, which are organic compounds according to bls data.
  • Food additives: Many food additives like preservatives and flavorings are organic compounds.

Common Employers for Organic Chemists

Organic chemists work in a variety of settings, including academic research institutions, chemical manufacturers, and pharmaceutical companies. Some specific examples of common employers include:

  • Merck & Co.: This global pharmaceutical company employs thousands of organic chemists to develop new drugs.
  • Dow Chemical Company: This multinational corporation produces a wide range of chemical products using organic chemistry principles.
  • National Institutes of Health: The NIH conducts cutting-edge research on topics ranging from cancer to infectious diseases.

Analytical Chemistry: Definition and Examples

Analytical chemistry is a vital branch of chemistry that deals with the identification, separation, and quantification of chemical compounds in a sample. Analytical chemists use various techniques to perform chemical analysis, including spectroscopy, chromatography, and electrochemistry. The results of analytical chemistry are used in a wide range of fields, including environmental science, pharmaceuticals, and forensics.

Chemical Analysis

Analytical chemistry involves the use of quantitative methods to determine the composition of a substance or mixture. Chemical analysis can be qualitative or quantitative. Qualitative analysis aims to identify the presence or absence of certain chemical compounds in a sample. On the other hand, quantitative analysis measures the amount or concentration of these substances.


One technique used by analytical chemists is spectroscopy. Spectroscopy involves analyzing how light interacts with matter to determine its properties. Different types of spectroscopy include infrared (IR) spectroscopy, ultraviolet-visible (UV-Vis) spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy.


Another technique commonly used in analytical chemistry is chromatography. Chromatography separates mixtures into their individual components based on their physical and chemical properties. There are different types of chromatography techniques such as gas chromatography (GC), high-performance liquid chromatography (HPLC), and thin-layer chromatography (TLC).


Electrochemistry is another important technique used by analytical chemists to analyze samples containing ions or molecules that can undergo oxidation-reduction reactions. Electrochemical methods include potentiometry, voltammetry and coulometry.

Forensic Chemistry

Forensic chemists use analytical chemistry techniques to analyze evidence from crime scenes such as blood samples or fibers to help solve crimes. For example, if there is an unknown white powder found at a crime scene forensic chemist will use analytical techniques like IR spectroscopy and chromatography to identify the chemical composition of the powder. The results can be used in court as evidence.

Environmental Science

Analytical chemistry plays a crucial role in environmental science. Analyzing air, water, and soil samples helps to monitor pollution levels and identify potential health hazards. For example, analytical chemists use gas chromatography-mass spectrometry (GC-MS) to analyze organic pollutants in water samples.


The pharmaceutical industry relies heavily on analytical chemistry techniques for quality control. Analytical chemists are responsible for ensuring that drugs are safe and effective by analyzing their chemical composition. Techniques such as HPLC are used to analyze drug purity and detect impurities.

Physical Chemistry: Definition and Examples

Physical chemistry is a branch of chemistry that focuses on the study of physical properties and behavior of chemical systems. Physical chemists use principles from physics, such as thermodynamics and quantum mechanics, to understand chemical reactions and processes. This field plays an essential role in developing new materials, designing drugs, and understanding atmospheric chemistry.

Physical Properties

The physical properties of chemicals are the characteristics that can be observed or measured without changing their composition. These properties include color, melting point, boiling point, density, solubility, viscosity, surface tension, and refractive index. Physical chemists study these properties to understand how they relate to the chemical structure of substances. For example, determining the boiling point of a substance can provide insight into its molecular weight and intermolecular forces.


Thermodynamics is the study of energy transformations in matter. Physical chemists use thermodynamic principles to predict whether a reaction will occur spontaneously or require energy input. They also use thermodynamics to determine the efficiency of energy conversion processes such as fuel cells.

Quantum Chemistry

Quantum chemistry is a subfield of physical chemistry that uses quantum mechanics to study the behavior of atoms and molecules. Quantum mechanics is a branch of physics that describes how particles behave at the atomic level. By applying quantum mechanics principles to chemical systems, physical chemists can predict molecular geometries and electronic structures accurately.

Practical Applications

Physical chemistry has many practical applications in various fields such as medicine, engineering, environmental science, and materials science. For instance:

  • Drug Design: Physical chemists apply their knowledge of molecular interactions to design drugs with specific properties.
  • Atmospheric Chemistry: Understanding atmospheric chemistry requires knowledge about how gases interact with each other physically.
  • Materials Science: The development of new materials with specific properties often involves studying their physical properties under different conditions.

Biochemistry: Definition and Examples

Biochemistry is a fascinating field of study that focuses on the chemical processes within living organisms. It encompasses a wide range of topics, from basic biochemical research to clinical biochemistry and agricultural biochemistry. In this section, we will explore some examples of biochemistry and its crucial role in healthcare.

Biochemical Research

Biochemical research involves the study of biological molecules such as proteins, carbohydrates, lipids, and nucleic acids. This field aims to understand how these molecules interact with one another and how they contribute to the functioning of living organisms. Biochemists use various techniques such as chromatography, electrophoresis, and spectroscopy to analyze these molecules.

One example of biochemical research is the study of enzymes. Enzymes are proteins that catalyze biochemical reactions in cells. Biochemists study how enzymes work and how they can be manipulated to improve industrial processes or develop new drugs.

Another example is the study of metabolic pathways. Metabolic pathways are sequences of biochemical reactions that occur within cells. Biochemists investigate these pathways to understand how cells produce energy, synthesize biomolecules, and respond to environmental changes.

Clinical Biochemistry

Clinical biochemistry is a branch of biochemistry that focuses on the analysis of biological fluids such as blood, urine, and cerebrospinal fluid. Clinical biochemists use laboratory tests to diagnose diseases and monitor treatment outcomes.

One example is the measurement of blood glucose levels in patients with diabetes mellitus. Clinical biochemists use enzymatic assays or electrochemical sensors to measure glucose levels in blood samples. This information helps physicians adjust medication dosages or dietary recommendations for their patients.

Another example is the measurement of cholesterol levels in patients at risk for cardiovascular disease. High levels of low-density lipoprotein (LDL) cholesterol are associated with an increased risk for heart attacks and strokes. Clinical biochemists analyze blood samples using spectrophotometry or immunoassays to measure LDL cholesterol levels. This information helps physicians determine appropriate treatment options for their patients.

Agricultural Biochemistry

chemistry organic
chemistry organic

Agricultural biochemistry is a subfield of biochemistry that focuses on the biological and chemical processes of plants and animals in agriculture. Agricultural biochemists study how plants and animals grow, develop, and respond to environmental stresses.

One example is the development of drought-resistant crops. Agricultural biochemists investigate the biochemical mechanisms that allow certain plants to survive in arid environments. By understanding these mechanisms, they can develop new crop varieties that are more tolerant of drought conditions.

Another example is the production of animal feed additives. Agricultural biochemists investigate the nutritional requirements of livestock and develop supplements that improve their health and productivity. For example, they may add enzymes to animal feed that help break down complex carbohydrates into simpler sugars for easier digestion.

Environmental Chemistry: Definition and Examples

Environmental chemistry is a crucial branch of chemistry that focuses on the study of chemical processes and their effects on the environment. Environmental chemists work to identify, understand, and mitigate the impact of human activities on the environment. The field plays a vital role in addressing environmental issues such as pollution, climate change, and waste management.

Work Environment for Environmental Chemists

Environmental chemists work in a variety of settings including government agencies, research institutions, and private companies. The typical work environment for environmental chemists involves conducting laboratory experiments, analyzing data, and developing solutions to environmental problems. They use advanced analytical techniques to measure trace amounts of contaminants in air, water, soil or other matrices.

Examples of Environmental Chemistry Research

The field of environmental chemistry has many applications that can help solve pressing environmental problems. One example is studying the effects of pesticides on ecosystems. Pesticides are widely used to control pests in agriculture but can have harmful effects on non-target organisms such as bees or birds if not used correctly. Environmental chemists study how pesticides move through ecosystems and how they affect different organisms.

Another example is developing new methods for recycling plastics. Plastics are ubiquitous in modern society but pose significant challenges when it comes to disposal. Traditional methods like landfilling or incineration can lead to pollution or greenhouse gas emissions. Researchers are looking into new ways to recycle plastics using chemical processes that break them down into their constituent parts so they can be reused.

Monitoring air and water quality is also an important application of environmental chemistry research. Air pollutants like particulate matter or ozone can have harmful effects on human health while water pollutants like lead or mercury can contaminate drinking water sources leading to serious health problems over time.

Materials Chemistry: Definition and Examples

Chemistry is a broad field that encompasses many branches, including materials chemistry. Materials chemistry is the study of materials, their chemical composition, and how they are manufactured. It is a vital area of research that plays an essential role in industries such as manufacturing, electronics, and energy production.

What is Materials Chemistry?

Materials chemistry focuses on understanding the properties and behavior of various materials at the molecular level. It involves studying the chemical elements, compounds, and processes involved in creating new materials with specific properties. The field also deals with understanding how different factors like temperature, pressure, and light can affect the structure and reactivity of materials.

The Role of Materials Chemistry

Materials chemistry plays an essential role in developing new technologies and improving existing ones. For example, it has helped to create stronger and more durable metals for use in construction projects or machinery parts. It has led to the development of innovative polymers used in medical devices or consumer products like cell phone cases.

Examples of Materials Studied in Materials Chemistry

There are several types of materials studied in materials chemistry. These include metals, ceramics, polymers, composites, and nanomaterials.

Metals: Metals are one of the most common types of materials studied by materials chemists due to their wide range of applications across various industries. Researchers investigate ways to improve their strength or corrosion resistance through alloying or surface treatments.

Ceramics: Ceramics are another type of material commonly studied by materials chemists due to their unique properties like high melting points or electrical conductivity. One example is piezoelectric ceramics used in sensors or actuators.

Polymers: Polymers are large molecules made up of repeating subunits called monomers. They have many applications across industries from packaging to biomedical implants.

Composites: Composites are combinations of two or more different types of material that create a new material with unique properties. For example, carbon fiber reinforced polymer composites are used in aerospace applications due to their high strength and low weight.

Nanomaterials: Nanomaterials are materials with at least one dimension less than 100 nanometers. They exhibit unique properties such as quantum confinement or surface plasmon resonance that make them useful for various applications like drug delivery or catalysis.

Understanding the Significance of the Different Branches of Chemistry

Chemistry is an incredibly diverse field that encompasses a wide range of topics and areas of study. The different branches of chemistry each have their own unique focus and applications, but they are all interconnected and contribute to our understanding of the world around us.

Inorganic chemistry, for example, focuses on the properties and behavior of inorganic compounds such as metals and minerals. This branch of chemistry has many practical applications in fields such as materials science, nanotechnology, and environmental science.

Organic chemistry, on the other hand, deals with the study of carbon-based compounds such as hydrocarbons and polymers. This branch is particularly important in pharmaceuticals development, as well as in agriculture, food science, and many other industries.

Analytical chemistry involves the development and application of techniques for measuring chemical properties such as composition or concentration. This branch is essential for quality control in manufacturing processes, environmental monitoring, forensic analysis, and much more.

Physical chemistry focuses on understanding the fundamental principles that govern chemical systems at a molecular level. This includes topics such as thermodynamics, kinetics, quantum mechanics, electrochemistry among others. Physical chemists use mathematical models to explain chemical phenomena which can be applied to various fields like drug design or energy production.

Biochemistry studies the chemical processes that occur within living organisms at a molecular level. It plays a vital role in medicine since it provides insights into how drugs interact with biological molecules or how diseases develop at a cellular level.

Environmental chemistry is concerned with studying how chemicals interact with natural systems like air or water bodies. It helps us understand how pollutants affect ecosystems by providing information about their sources distribution patterns among others.

Materials Chemistry deals with designing new materials having specific desired properties for industrial applications by studying their structure-property relationships

Each branch has its own unique set of challenges but also offers tremendous opportunities for discovery and innovation across many industries including medicine energy production agriculture manufacturing and more. Understanding the significance of these different branches of chemistry allows us to fully appreciate the vast potential of this field and its impact on our lives.