Researchers from the Institute for Molecules and Materials at Radboud University, Netherlands, have demonstrated that a complex self-organizing chemical reaction network can perform various computational tasks, such as nonlinear ...
Scientists from Trinity College Dublin have created a computer program that "paints" the structure of molecules in the style of famous Dutch artist, Piet Mondrian, whose beautiful artworks will be instantly recognizable to ...
Analytical Chemistry
Jul 12, 2024
0
95
Using the CARMENES spectrograph, astronomers have found evidence of water vapor in the atmosphere of a hot Saturn exoplanet designated HD 149026 b, dubbed Smertrios. The finding, reported in a research paper published on ...
Astronomers have performed a comprehensive chemical study of a Galactic globular cluster known as Terzan 6. Results of the study, presented in a research paper published June 11 on the pre-print server arXiv, could advance ...
A study published in Science Advances shows that phosphorus (P) release from soils is enhanced at higher mean annual temperatures (MAT). This finding is based on a new compilation of data on global surface soil temperatures ...
Earth Sciences
Jul 15, 2024
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0
Nathaniel Martin, Professor of biological chemistry, wondered what would happen if you took an antibiotic that has been known for 70 years and tried to improve it with the latest tools of modern chemistry. Turns out it can ...
Biochemistry
Jul 12, 2024
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87
While the COVID-19 vaccines introduced many people to RNA-based medicines, RNA oligonucleotides have already been on the market for years to treat diseases like Duchenne Muscular Dystrophy and amyloidosis. RNA therapies offer ...
Biotechnology
Jul 12, 2024
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57
RIKEN chemists have developed a molecule that enhances the performance of organic electronic devices and is also more stable than previous alternatives, raising the chances that it could be used in industrial manufacturing ...
Analytical Chemistry
Jul 11, 2024
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148
Research from Los Alamos National Laboratory shows that a new rock physics model will provide more comprehensive and actionable data about how carbon dioxide changes rock properties throughout geologic storage sites, which ...
Earth Sciences
Jul 11, 2024
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1
Pouring cream into coffee creates a show of eddies that rivals Jupiter's roiling storms. But one clank of the spoon collapses all that black and tan chaos into a smooth, uniform brown. It turns out there's a lot to that mixing. ...
Polymers
Jul 11, 2024
0
1
cept
A chemical substance is a material with a specific chemical composition.
A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Some typical chemical substances are diamond, gold, salt (sodium chloride) and sugar (sucrose). Generally, chemical substances exist as a solid, liquid, or gas, and may change between these phases of matter with changes in temperature or pressure. Chemical reactions convert one chemical substance into another.
Forms of energy, such as light and heat, are not considered to be matter, and thus they are not "substances" in this regard.
This text uses material from Wikipedia, licensed under CC BY-SA
