matter : material substance that occupies space, has mass, and is composed predominantly of atoms consisting of protons, neutrons, and electrons, that constitutes the observable universe, and that is interconvertible with energy — Webster
Matter is any substance that has mass and takes up space by having volume. All everyday objects that we can touch are ultimately composed of atoms, which are made up of interacting subatomic particles, and in everyday as well as scientific usage, “matter” generally includes atoms and anything made up of them, and any particles (or combination of particles) that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or sound.
Matter exists in various states (also known as phases). These include classical everyday phases such as solid, liquid, and gas – for example water exists as ice, liquid water, and gaseous steam – but other states are possible, including plasma, Bose–Einstein condensates, fermionic condensates, and quark–gluon plasma.
Usually atoms can be imagined as a nucleus of protons and neutrons, and a surrounding “cloud” of orbiting electrons which “take up space”. However this is only somewhat correct, because subatomic particles and their properties are governed by their quantum nature, which means they do not act as everyday objects appear to act – they can act like waves as well as particles and they do not have well-defined sizes or positions.
In the Standard Model of particle physics, matter is not a fundamental concept because the elementary constituents of atoms are quantum entities which do not have an inherent “size” or “volume” in any everyday sense of the word. Due to the exclusion principle and other fundamental interactions, some “point particles” known as fermions (quarks, leptons), and many composites and atoms, are effectively forced to keep a distance from other particles under everyday conditions; this creates the property of matter which appears to us as matter taking up space. — Wikipedia
NIST Chemistry WebBook
Physical and Chemical Properties Resources (UC Berkeley Physics and Astronomy Library)
CRC Handbook of Chemistry and Physics Online (99th Edition)
ChemSpider: Free Chemical Structure Database
Chemistry Calculators (Calculator.com)
Chemistry is the scientific discipline involved with compounds composed of atoms, i.e. elements, and molecules, i.e. combinations of atoms: their composition, structure, properties, behavior and the changes they undergo during a reaction with other compounds. Chemistry addresses topics such as how atoms and molecules interact via chemical bonds to form new chemical compounds. — Wikipedia
Everything you’ve learned in school as “obvious” becomes less and less obvious as you begin to study the universe. For example, there are no solids in the universe. There’s not even a suggestion of a solid. There are no absolute continuums. There are no surfaces. There are no straight lines. — R. Buckminster Fuller
Journal of the American Chemical Society: Latest Articles (ACS Publications) latest articles published in Journal of the American Chemical Society
- [ASAP] Local Structure Engineering in...by Hao Dong, Ling-Dong Sun, and Chun-Hua Yan on December 4, 2021 at 5:00 am
Journal of the American Chemical SocietyDOI: 10.1021/jacs.1c10425
- [ASAP] Feeding Carbonylation with CO2...by Shanshan Fu, Shuang Yao, Song Guo, Guang-Chen Guo, Wenjuan Yuan, Tong-Bu Lu, and Zhi-Ming Zhang on December 4, 2021 at 5:00 am
Journal of the American Chemical SocietyDOI: 10.1021/jacs.1c08908
- [ASAP] Highly Active Cross-Metathesis of...by Kenta Mori, Midori Akiyama, Ko Inada, Yutaka Imamura, Yuichiro Ishibashi, Yusuke Takahira, Kyoko Nozaki, and Takashi Okazoe on December 3, 2021 at 5:00 am
Journal of the American Chemical SocietyDOI: 10.1021/jacs.1c10574
- [ASAP] Ni/Chiral Sodium Carboxylate Dual...by Xianghong Xu, Lingzi Peng, Xihao Chang, and Chang Guo on December 3, 2021 at 5:00 am
Journal of the American Chemical SocietyDOI: 10.1021/jacs.1c11044
- [ASAP] Action Plots in Action: In-Depth Insights...by Ishrath Mohamed Irshadeen, Sarah L. Walden, Martin Wegener, Vinh X. Truong, Hendrik Frisch, James P. Blinco, and Christopher Barner-Kowollik on December 3, 2021 at 5:00 am
Journal of the American Chemical SocietyDOI: 10.1021/jacs.1c09419
Nature Chemistry Nature Chemistry is a monthly journal dedicated to publishing high-quality papers that describe the most significant and cutting-edge research in all areas of chemistry. As well as reflecting the traditional core subjects of analytical, inorganic, organic and physical chemistry, the journal features a broad range of chemical research including, but not limited to, bioinorganic and bioorganic chemistry, catalysis, computational and theoretical chemistry, environmental chemistry, green chemistry, medicinal chemistry, organometallic chemistry, polymer chemistry, supramolecular chemistry and surface chemistry. Other multidisciplinary topics such as nanotechnology, chemical biology and materials chemistry are also featured.
- A chiral interlocking auxiliary strategy for the...by Alberto de Juan on November 29, 2021 at 12:00 am
Nature Chemistry, Published online: 29 November 2021; doi:10.1038/s41557-021-00825-9The synthesis of chiral interlocked molecules in which the mechanical bond provides the only source of stereochemistry remains challenging. Now, a chiral interlocked auxiliary approach to mechanically planar chiral rotaxanes has been developed and its potential demonstrated through the synthesis of a range of difficult targets with high enantioselectivity.
- Continuous, autonomous subsurface cargo shuttling...by Ganhua Xie on November 29, 2021 at 12:00 am
Nature Chemistry, Published online: 29 November 2021; doi:10.1038/s41557-021-00837-5Water-walking insects harness capillary forces by changing body posture to climb or descend the meniscus between water and a solid object. Now, autonomous aqueous-based synthetic systems have been shown to overcome the meniscus barrier and shuttle cargo subsurface between a landing site and targeted drop-off sites.
- Concurrent control over sequence and dispersity...by Maria-Nefeli Antonopoulou on November 29, 2021 at 12:00 am
Nature Chemistry, Published online: 29 November 2021; doi:10.1038/s41557-021-00818-8Synthetic approaches that can simultaneously control both polymer sequence and dispersity are difficult to achieve. Now, a switchable RAFT agent that regulates chain transfer activity during controlled radical polymerization has been shown to enable the one-pot synthesis of sequence-controlled multiblocks with on-demand control over dispersity while maintaining high livingness.
- Publisher Correction: Visible light-driven...by Dario Filippini on November 26, 2021 at 12:00 am
Nature Chemistry, Published online: 26 November 2021; doi:10.1038/s41557-021-00863-3Publisher Correction: Visible light-driven conjunctive olefination
- Towards high-performance sustainable polymers via...by Pengjun Yuan on November 25, 2021 at 12:00 am
Nature Chemistry, Published online: 25 November 2021; doi:10.1038/s41557-021-00817-9Five-membered lactones are common in nature and are produced in large quantities from biomass, but a lack of ring strain means that ring-opening polymerization is usually thermodynamically unfavourable at ambient conditions. Now, an irreversible ring-opening polymerization of biomass-derived five-membered thionolactones—driven by S/O isomerization—has been developed, enabling their conversion into […]
Geochemistry News -- ScienceDaily Earth and Climate Chemistry. Full text articles on organic and inorganic chemistry in the environment. Updated daily.
- Wild blue wonder: X-ray beam explores food color...on December 3, 2021 at 12:11 am
A natural food colorant called phycocyanin provides a fun, vivid blue in soft drinks, but it is unstable on grocery shelves. A synchrotron is helping to steady it.
- Air quality models can improve the accuracy of...on December 2, 2021 at 7:15 pm
The expansion of renewable energies is placing increasing demands on the power grids. Precise forecasts of the amount of solar power that will be fed into the grid is key to effective energy management. In addition to clouds, aerosol particles also strongly influence the amount of electricity generated by photovoltaic systems. Current air quality models are a good basis for estimating the production of solar electricity, but they could be further improved.
- Perovskite solar cells soar to new heightson December 2, 2021 at 7:15 pm
Researchers have developed a novel method to fabricate lead halide perovskite solar cells with record efficiency.
- Growing carbon footprint for plasticson December 2, 2021 at 4:35 pm
After analyzing the global plastics supply chain, researchers found that the impact of plastics on the climate and health is greater than thought due to the increased use of coal for process heat, electricity and as a raw material in production.
- Study links high cholesterol, cardiovascular...on December 1, 2021 at 1:51 pm
In a mouse study, a team led by a biomedical scientist found a phthalate -- a chemical used to make plastics more durable -- led to increased plasma cholesterol levels.
Scientific American - Chemistry Science news and technology updates from Scientific American
- Tiny Vibrating Bubbles Could Make Mining More...by Tess Joosse on November 30, 2021 at 11:45 am
An updated bubbling process allows for more efficient mineral separation -- Read more on ScientificAmerican.com
- Why Frozen Turkeys Explode When Deep-Friedby Kristine Nolin, The Conversation US on November 23, 2021 at 1:30 pm
When water and boiling oil mix, the result can be volatile -- Read more on ScientificAmerican.com
- What's Brewing in a Beer Is Startling Complexityby Maddie Bender on November 9, 2021 at 11:45 am
High-powered chemistry lets researchers trace a beer back to its ingredients -- Read more on ScientificAmerican.com
- How We Detect Caramel Candy Scentby Annie Melchor on October 29, 2021 at 11:30 am
Pinpointing the receptor responsible for the tasty treat’s aroma underscores the importance of smell -- Read more on ScientificAmerican.com
- New Molecular Tool Kit Wins Chemistry Nobelby Josh Fischman on October 6, 2021 at 9:00 am
Two chemists devised a faster, cleaner and more precise way to construct drug molecules and other modern materials -- Read more on ScientificAmerican.com
Chemistry News - Biochemistry, Polymers, Materials Science The latest news stories on chemistry, biochemistry, polymers, materials science from Phys.org
- Using machine learning and computationally...on December 3, 2021 at 2:20 pm
A team of researchers at RWTH Aachen University and the University of Jyväskylä has developed a system based on machine learning and computationally derived descriptors that can be used to find special kinds of catalysts. In their paper published in the journal Science, the group describes using machine learning algorithms to find patterns in known types of ligands and applying the results to find new catalysts.
- Microplastic pollution aids antibiotic resistanceon December 2, 2021 at 9:32 pm
The Styrofoam container that holds your takeout cheeseburger may contribute to the population's growing resistance to antibiotics.
- Using Raman spectroscopy and computational...on December 2, 2021 at 3:30 pm
A team of researchers affiliated with a number of institutions in China and one in the U.K. has used Raman spectroscopy and computational techniques to study the interfacial water on Pd single-crystal surfaces. In their paper published in the journal Nature, the group describes their study of the dynamics and structure of water at the solid-liquid interface and what they learned from it. Matthias Waegele, with Boston College has published a News and Views piece in the same journal issue […]
- Characterizing tardigrades' disordered protein to...on December 1, 2021 at 1:53 pm
A team of researchers from the University of Grenoble Alpes, CNRS, CEA Institut de Biologie Structurale and one with the National (Taiwan) University has learned more about the unique protein made by tardigrades that allows them to survive in extremely hostile conditions. They've published their findings in Angewandte Chemie International Edition.
- Why cannabis smells skunkyon December 1, 2021 at 1:47 pm
As cannabis is legalized in more areas, it has become increasingly popular as a medicinal and recreational drug. This plant produces a pungent, skunk-like odor that is pleasing to some but repulsive to others. Now, researchers reporting in ACS Omega have discovered a new family of prenylated volatile sulfur compounds (VSCs) that give cannabis its characteristic skunky aroma. The findings open up opportunities to investigate the molecules for medicinal benefits, the researchers say.
Here are links to pages about closely related subjects.
Solar System Sun
Terrestrial Planet Mercury, Venus, Earth (Moon), Mars
Asteroid Belt Ceres, Vesta
Jovian Planet Jupiter, Saturn, Uranus, Neptune
Kuiper Belt Pluto, Haumea, Makemake
Scattered Disc Eris, Sedna, Planet X
Oort Cloud Etc. Scholz’s Star
Small Body Comet, Centaur, Asteroid