Scientists at the State University of Campinas (UNICAMP) in Brazil and the University of Cadiz (UCA) in Spain have successfully deployed a novel method of extracting high-value-added chemical compounds from the peel of jabuticaba ...
Molecular & Computational biology
15 hours ago
0
0
Researchers from MIT and the University of Michigan have discovered a new way to drive chemical reactions that could generate a wide variety of compounds with desirable pharmaceutical properties.
Materials Science
Jun 27, 2024
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164
Scientists have eagerly awaited the opportunity to dig into the 4.3-ounce (121.6-gram) pristine asteroid Bennu sample collected by NASA's OSIRIS-REx (Origins, Spectral Interpretation, Resource Identification, and Security—Regolith ...
Planetary Sciences
Jun 26, 2024
0
95
A small team of biologists from Freie Universität Berlin and the Max Planck Institute for Chemical Ecology, both in Germany, has calculated the degree of risk faced by wild fruit flies by capturing more than 10,000 of them ...
Researchers have uncovered how a structure in bodily carbohydrates (sugar chains or "glycans") that regulates how they attach themselves to other molecules interacts with key enzymes, and in so doing can contribute to a range ...
Biochemistry
Jun 26, 2024
0
0
More than 100,000 oil and gas wells across the western U.S. are in areas burned by wildfires in recent decades, a new study has found, and some 3 million people live next to wells that in the future could be in the path of ...
Earth Sciences
Jun 26, 2024
0
81
Using a special wafer-thin gold membrane, ETH researchers have made it significantly easier to study surfaces. The membrane makes it possible to measure properties of surfaces that are inaccessible to conventional methods.
Nanophysics
Jun 25, 2024
0
76
As awareness of toxic, synthetic chemical pollution from per- and polyfluorinated substances (PFAS) increases, more legal settlements in billion dollar amounts are being made between chemical companies and public water suppliers, ...
Environment
Jun 25, 2024
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14
A doubling of the amount of CO2 in the atmosphere could cause an increase in the average temperature on Earth from 7 to a maximum of 14 degrees. This is shown in the analysis of sediments from the Pacific Ocean off the coast ...
Earth Sciences
Jun 24, 2024
0
291
A study of 17 commonly-used synthetic 'forever chemicals' has shown that these toxic substances can readily be absorbed through human skin.
Environment
Jun 24, 2024
0
138
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
