HS-PS1-2
Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
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Chemistry
Explainer: What is a catalyst?
Catalysts are used in manufacturing and many technologies. They’re also found in living things. They help chemical reactions move along.
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Tech
How to spin synthetic spider silk
A new method for spinning artificial spider silk combines parts of proteins from two species and mimics what happens in a spider’s silk-forming gland.
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Computing
How to build computer chips only 3 atoms thick
Scientists have engineered an ultrathin material only three atoms thick. The material could be used to make extremely slender computer chips.
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Computing
LEDs offer new way to kill germs in water
Growing ultraviolet-light-emitting diodes on thin, flexible sheets of metal holds promise for water disinfection and other applications.
By Sid Perkins -
Tech
Clear, stretchy sensor could lead to wearable electronics
Researchers have combined plastics and metal to make a transparent, stretchable sensor. It could soon find use in touchscreens, wearable electronics and more.
By Sid Perkins -
Chemistry
Scientists Say: Acidification
When a solution becomes more acidic, it’s acidifying. And that’s not always a good thing.
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Chemistry
How sweat might make you smell sweeter
A new scent-delivery system ensures that the more you sweat, the more perfume it releases. In fact, it only works in contact with moisture.
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Tech
Cool Jobs: Big future for super small science
Scientists using nanotechnology grow super-small but very useful tubes with walls no more than a few carbon atoms thick. Find out why as we meet three scientists behind this huge new movement in nanoscience.
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Chemistry
Form some bonds with a chemistry card game
A new game can make aspects of learning chemistry fun. Pair charged elements together to create neutral compounds. Win points in the process.
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Health & Medicine
How hot peppers can soothe pain
Peppers can burn the tongue, but soothe sore tissues. Scientists have now sleuthed out how, and the answer shows a role for stretch sensors on cells.
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Physics
New particle may help probe strongest force in the universe
A newfound subatomic particle should allow scientists to better understand the strong force that holds together the nucleus of every atom.
By Andrew Grant -
Chemistry
Scientists confirm element 117
Scientists have confirmed the existence of a new, short-lived superheavy element. For now, they’re calling it ununseptium.
By Janet Raloff