chem·is·try
- The science of the composition, structure, properties, and reactions of matter, especially of atomic and molecular systems.
- The composition, structure, properties, and reactions of a substance.
- The elements of a complex entity and their dynamic interrelation: "Now that they had a leader, a restless chemistry possessed the group" (John Updike).
What does Chem stand for?
CHEM: Chemistry: CHEM: Chemical: CHEM: Chemist: CHEM: Centre des Hautes Études ...
What does the name Chem mean?
ˈkɛm ə stri Chem·ist·ry Here are all the possible meanings and translations of the word Chemistry. Princeton's WordNet (4.00 / 4 votes) Rate this definition: chemistry, chemical science noun the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions chemistry noun
What is a good Chem?
it’s good to be good but it’s better to be lucky. Perhaps that’s true for chemical recycling companies, as well. But the plastics industry is based on science, and while luck happens sometimes, even in science, it’s mostly the knowledge and skills ...
What to memorize for Chem?
Study Tips for Chemistry
- Learning Chemistry takes time! ...
- Dig Deep on practice problems. ...
- Do the reading and warm up problems BEFORE lecture. ...
- Lab Sections really do matter. ...
- Ask lots and lots of questions! ...
- Study chemistry when you are awake! ...
- Study more efficiently – not just more! ...
Whats the meaning of Chem?
1 : a science that deals with the composition, structure, and properties of substances and with the transformations that they undergo. 2a : the composition and chemical properties of a substance the chemistry of iron. b : chemical processes and phenomena (as of an organism) blood chemistry.
What does Chem mean in text?
Summary of Key Points "Chemistry" is the most common definition for CHEM on Snapchat, WhatsApp, Facebook, Twitter, Instagram, and TikTok.
What does Chem mean root word?
chemo- , chemi-, chem- [Gr. chēmia, alchemy] Prefixes meaning chemical, chemistry.
What does Chem mean in RP?
RP Chemistry Abbreviation5RP1RPAntibiotic, Salt, Business1RPMedical1RPChromatography, Laboratory, Medical1RPAerospace Engineering, Exploration, Technology15 more rows
What is the definition of chemistry?
Medical Definition of chemistry. 1 : a science that deals with the composition, structure, and properties of substances and of the transformations that they undergo. 2 a : the composition and chemical properties of a substance the chemistry of hemoglobin.
What is chemistry in science?
English Language Learners Definition of chemistry. : a science that deals with the structure and properties of substances and with the changes that they go through. : the structure and properties of a substance : the way a substance changes and reacts with other substances. : a strong attraction between people.
What does "chemistry" mean in biology?
2 a : the composition and chemical properties of a substance the chemistry of iron. b : chemical processes and phenomena (as of an organism) blood chemistry. 3 a : a strong mutual attraction, attachment, or sympathy they have a special chemistry.
What is the definition of chemical composition?
1 : a science that deals with the composition and properties of substances and of the changes they undergo. 2 : chemical composition and properties the chemistry of food.
What does "chemical" mean in science?
Definition of chemical (Entry 2 of 2) 1 : a substance obtained by a chemical process or producing a chemical effect. 2 : drug sense 2. Keep scrolling for more.
What is chemical in English?
noun. English Language Learners Definition of chemical (Entry 2 of 2) : a substance (such as an element or compound) that is made by a chemical process. See the full definition for chemical in the English Language Learners Dictionary.
What does "chemical" mean in medical terms?
Medical Definition of chemical (Entry 2 of 2) 1 : a substance (as an element or chemical compound) obtained by a chemical process or used for producing a chemical effect. 2 : drug sense 2.
What do chemists do?
Chemists work in a variety of fields, including research and development, quality control, manufacturing, environmental protection, consulting and law. They can work at universities, for the government or in private industry, according to the ACS.
What is the purpose of biochemistry?
Biochemistry, as mentioned above, uses chemistry techniques to understand how biological systems work at a chemical level. Thanks to biochemistry, researchers have been able to map out the human genome, understand what different proteins do in the body and develop cures for many diseases.
What is inorganic chemistry?
Inorganic chemistry studies the chemical compounds in inorganic, or non-living things such as minerals and metals. Traditionally, inorganic chemistry considers compounds that do not contain carbon (which are covered by organic chemistry), but this definition is not completely accurate, according to the ACS .
Why is analytical chemistry important?
Analytical chemistry is also used to monitor the health of the environment by measuring chemicals in water or soil, for example.
Why does chemistry touch everything?
The reason why chemistry touches everything we do is because almost everything in existence can be broken down into chemical building blocks. The main building blocks in chemistry are chemical elements, which are substances made of a single atom.
What are the elements that bond together?
Chemical elements can bond together to form chemical compounds, which are substances made up of multiple elements, like carbon dioxide (which is made of one carbon atom connected to two oxygen atoms), or multiple atoms of a single element, like oxygen gas (which is made of two oxygen atoms connected together).
What are the building blocks of chemistry?
The main building blocks in chemistry are chemical elements, which are substances made of a single atom. Each chemical is unique, composed of a set number of protons, neutrons and electrons, and is identified by a name and a chemical symbol, such as "C" for carbon. The elements that scientists have discovered so far are listed in the periodic table of elements, and include both elements that are found in nature like carbon, hydrogen and oxygen, as well as those that are manmade, like Lawrencium.
What Is Chemistry?
When you hear the word 'chemistry,' there are likely certain images that come to mind - molecules, test tubes, the periodic table, maybe even some cool explosions in a movie.
Why is chemistry considered a science?
But chemistry is so much more than these things! In fact, chemistry is known as the central science because it touches all other natural sciences, like biology, physics, geology , and more. Chemistry is a physical science, and it is the study of the properties of and interactions between matter and energy. In other words, chemistry is a way ...
What is the central science of chemistry?
Lesson Summary. Known as the central science, chemistry is the study of the properties of and interactions between matter and energy. Matter is stuff, and atoms are what make up that stuff. So you could say that chemists study all the stuff on Earth as well as what that stuff itself is made of!
What is analytical chemistry?
Analytical chemistry is a field that is just what it sounds like: the analysis of matter. Analytical chemists try to gain information and knowledge about the properties, composition, and structure of different materials and substances in order to better understand them.
Why is chemistry important?
And because an understanding of chemistry is so vital in so many other scientific fields, there are several different branches of chemistry that exist. In fact, chemistry is often studied so that scientists can better understand their own field.
Why is applied chemistry used?
Applied chemistry is specifically used to solve problems - in this case, chemistry is used to have different effects on different hair types. Biochemistry sounds a lot like biology and chemistry, and this is because it is chemistry as applied to living organisms and their processes.
What is environmental chemistry?
Environmental chemistry examines chemical reactions and their effects on our environment by understanding how the chemicals got there, how they're transported, and what happens to them once they're there. Even though chemistry is already a physical science, a specific branch of chemistry exists called physical chemistry.
What is the origin of the word "chemistry"?
The word chemistry comes from a modification of the word alchemy, which referred to an earlier set of practices that encompassed elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism and medicine. Alchemy is often seen as linked to the quest to turn lead or other base metals into gold, though alchemists were also interested in many of the questions of modern chemistry.
Where does the word "chemistry" come from?
The word chemistry comes from a modification of the word alchemy, which referred to an earlier set of practices that encompassed elements of chemistry, metallurgy, philosophy, astrology, astronomy, mysticism and medicine. Alchemy is often seen as linked to the quest to turn lead or other base metals into gold, though alchemists were also interested in many of the questions of modern chemistry.
How did chemistry start?
The history of chemistry spans a period from very old times to the present. Since several millennia BC, civilizations were using technologies that would eventually form the basis of the various branches of chemistry. Examples include extracting metals from ores, making pottery and glazes, fermenting beer and wine, extracting chemicals from plants for medicine and perfume, rendering fat into soap, making glass, and making alloys like bronze. Chemistry was preceded by its protoscience, alchemy, which is an intuitive but non-scientific approach to understanding the constituents of matter and their interactions. It was unsuccessful in explaining the nature of matter and its transformations, but, by performing experiments and recording the results, alchemists set the stage for modern chemistry. Chemistry as a body of knowledge distinct from alchemy began to emerge when a clear differentiation was made between them by Robert Boyle in his work The Sceptical Chymist (1661). While both alchemy and chemistry are concerned with matter and its transformations, the crucial difference was given by the scientific method that chemists employed in their work. Chemistry is considered to have become an established science with the work of Antoine Lavoisier, who developed a law of conservation of mass that demanded careful measurement and quantitative observations of chemical phenomena. The history of chemistry is intertwined with the history of thermodynamics, especially through the work of Willard Gibbs.
What state of matter is studied?
Matter can be studied in solid, liquid, gas and plasma states, in isolation or in combination. The interactions, reactions and transformations that are studied in chemistry are usually the result of interactions between atoms, leading to rearrangements of the chemical bonds which hold atoms together.
What is a chymistry?
In 1663, the chemist Christopher Glaser described "chymistry" as a scientific art, by which one learns to dissolve bodies, and draw from them the different substances on their composition, and how to unite them again, and exalt them to a higher perfection.
What is energy in chemistry?
In the context of chemistry, energy is an attribute of a substance as a consequence of its atomic, molecular or aggregate structure. Since a chemical transformation is accompanied by a change in one or more of these kinds of structures, it is invariably accompanied by an increase or decrease of energy of the substances involved. Some energy is transferred between the surroundings and the reactants of the reaction in the form of heat or light; thus the products of a reaction may have more or less energy than the reactants.
What is compound chemistry?
A compound is a pure chemical substance composed of more than one element. The properties of a compound bear little similarity to those of its elements. The standard nomenclature of compounds is set by the International Union of Pure and Applied Chemistry (IUPAC). Organic compounds are named according to the organic nomenclature system. The names for inorganic compounds are created according to the inorganic nomenclature system. When a compound has more than one component, then they are divided into two classes, the electropositive and the electronegative components. In addition the Chemical Abstracts Service has devised a method to index chemical substances. In this scheme each chemical substance is identifiable by a number known as its CAS registry number .
What is a chemical?
Chemical Definition (noun) Everything which has mass is a chemical. Anything consisting of matter is a chemical. Any liquid, solid, gas. A chemical includes any pure substance; any mixture. Because this definition of a chemical is so broad, most people consider a pure substance (element or compound) to be a chemical, ...
What does "chemical" mean in a sentence?
Chemical Definition (adjective) As an adjective, the term "chemical" indicates a relationship to chemistry or to the interaction between substances. Used in a sentence: "She studied chemical reactions.". "They determined the chemical composition of the soil.".
What are some examples of chemicals?
Examples of things which are chemicals or consist of them include water, pencil, air, carpet, light bulb, copper, bubbles, baking soda, and salt. Of these examples, water, copper, baking soda, and salt are pure substances (elements or chemical compounds.
Quotes
Introduction
- Analytical chemistry uses qualitative and quantitative observation to identify and measure the physical and chemical properties of substances. In a sense, all chemistry is analytical.
Chemistry
- Physical chemistry combines chemistry with physics. Physical chemists study how matter and energy interact. Thermodynamics and quantum mechanics are two of the important branches of physical chemistry. Organic chemistry specifically studies compounds that contain the element carbon. Carbon has many unique properties that allow it to form complex chemical bonds and v…
Components
- Food science deals with the three biological components of food carbohydrates, lipids and proteins. Carbohydrates are sugars and starches, the chemical fuels needed for our cells to function. Lipids are fats and oils and are essential parts of cell membranes and to lubricate and cushion organs within the body. Because fats have 2.25 times the energy per gram than either c…
Scope
- Agricultural chemistry is concerned with the substances and chemical reactions that are involved with the production, protection and use of crops and livestock. It is a highly interdisciplinary field that relies on ties to many other sciences. Agricultural chemists may work with the Department of Agriculture, the Environmental Protection Agency, the Food and Drug Administration or for privat…
Roles
- Geochemists combine chemistry and geology to study the makeup and interaction between substances found in the Earth. Geochemists may spend more time in field studies than other types of chemists. Many work for the U.S. Geological Survey or the Environmental Protection Agency in determining how mining operations and waste can affect water quality and the enviro…
Analysis
- Forensic chemists capture and analyze the physical evidence left behind at a crime scene to help determine the identities of the people involved as well as to answer other vital questions regarding how and why the crime was carried out. Forensic chemists use a wide variety of analyzation methods, such as chromatography, spectrometry and spectroscopy.
Research
- In new research appearing in the Journal of the American Society of Mass Spectrometry, scientists from the department of chemistry at Louisiana State University (LSU) set out to apply laser technology to the field of forensic science.
Operation
- The tool focuses a laser using mirrors and optical fibers onto a surface containing a fingermark. The laser then heats up any water or moisture on the surface, triggering chemical bonds in the water to stretch and vibrate, according to the LSU College of Science Blog. All of this focused energy causes the water to explode, turning it into a gas and separating biomolecules such as D…
Example
- Next a small vacuum pump system pulls the water and molecules into a tiny filter that captures everything left behind by a persons finger. Forensic scientists can then put the contents into an analysis device such as a mass spectrometer or a gas chromatography-mass spectrometer.
Advantages
- Importantly, this laser ablation technique can easily capture fingermarks on porous surfaces, such as cardboard (on which traditional forensic methods have not been very successful).
Discovery
- To test their new technique, the researchers placed fingermarks on many different surface types, including glass, plastic, aluminum and cardboard. These fingermarks were laced with substances as diverse as caffeine, antiseptic cream, condom lubricants and TNT, according to the LSU College of Science Blog. After each fingermark capture, the chemists were able to identify these …