Matter

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Physical Realm
Physical Laws (Constants) Relativity
Matter Molecule, Atom (Periodic Table), Particle
Force Gravity, Electromagnetism (Light, Color)

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These are organized by a classification scheme developed exclusively for Cosma. More…

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Chemistry Subject Guide (Library of Congress)
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Merck Index
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Dictionary

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

OneLook, Free Dictionary, Wiktionary, Urban Dictionary

Oxford Dictionary of Chemistry
Combined Chemical Dictionary (CRC Press)

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Encyclopedia

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

Eric Weisstein’s World of Chemistry
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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

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Alchemy May Not Have Been the Pseudoscience We All Thought It Was (Richard Conniff, Smithsonian Magazine)
Alchemy (Tim Hunkin, Rudiments of Wisdom Encyclopedia)



Robert Boyle

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Journal of the American Chemical Society: Latest Articles (ACS Publications) latest articles published in Journal of the American Chemical Society


  • A positive positive to negative
    by Jed F. Fisher on September 20, 2018 at 12:00 am

    A positive positive to negativeA positive positive to negative, Published online: 20 September 2018; doi:10.1038/s41557-018-0148-yThe structure of an antibiotic that is effective against Gram-positive bacteria, but not against Gram-negative bacteria, has now been modified to improve its effectiveness against Gram-negative bacteria. The approach could help broaden the spectrum of activity of other antibiotics. […]

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  • It’s alive!
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  • S<sub>N</sub>Ar stands corrected
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Geochemistry News -- ScienceDaily Earth and Climate Chemistry. Full text articles on organic and inorganic chemistry in the environment. Updated daily.

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  • Breakthrough in blending metals
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  • Emissions from most diesel cars in Europe greatly...
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    A new study reports finds that in Europe, 10 major auto manufacturers produced diesel cars, sold between 2000 and 2015, that generate up to 16 times more emissions on the road than in regulatory tests. […]

  • New battery gobbles up carbon dioxide
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    New technology could use carbon dioxide captured from power plants to make a new kind of lithium battery. […]

  • Neutrons produce first direct 3-D maps of water...
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Scientific American - Chemistry Science news and technology updates from Scientific American


Chemistry News - Biochemistry, Polymers, Materials Science Phys.org provides the latest news on chemistry, biochemistry, polymers, materials science

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  • Material made from single molecule self-forms...
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  • Breakthrough in blending metals—precise control...
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    Researchers in Japan have found a way to create innovative materials by blending metals with precision control. Their approach, based on a concept called atom hybridization, opens up an unexplored area of chemistry that could lead to the development of advanced functional materials. […]

  • New battery gobbles up carbon dioxide
    on September 21, 2018 at 5:46 pm

    A new type of battery developed by researchers at MIT could be made partly from carbon dioxide captured from power plants. Rather than attempting to convert carbon dioxide to specialized chemicals using metal catalysts, which is currently highly challenging, this battery could continuously convert carbon dioxide into a solid mineral carbonate as it discharges. […]

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