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.

  1. 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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  2. 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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  3. 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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  4. 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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  5. 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.

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  6. Chemistry

    Scientists confirm element 117

    Scientists have confirmed the existence of a new, short-lived superheavy element. For now, they’re calling it ununseptium.

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  7. Physics

    Quark quartet forms exotic particle

    Quarks are important building blocks of matter, usually bound together as pairs or triples. Now some have formed a quartet. Scientists confirmed the existence of a particle made of four quarks stuck together. Such strange stuff may have been more common in the earliest universe, the scientists say.

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  8. Chemistry

    Explainer: Ocean acidification

    Here’s why shellfish and other animals in the sea suffer when the ocean is forced to absorb too much carbon dioxide.

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  9. Oceans

    Sea changes

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