Chemistry

  1. Chemistry

    Let’s learn about the periodic table

    This iconic chart holds information about all the known elements. As more are discovered, the table expands.

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  2. Life

    Scientists Say: Enzyme

    This word describes a molecule that speeds up chemical reactions in living things. Enzymes work by lowering the energy needed for a reaction to occur.

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  3. Chemistry

    Converting trash to valuable graphene in a flash

    Flash heating of carbon-rich wastes creates graphene, which has many commercial uses.

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  4. Life

    Scientists Say: Fermentation

    Fermentation breaks down carbohydrates, such as sugars, producing energy and making gases, acids or alcohol. This process can help make foods and fuels.

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  5. Chemistry

    Explainer: What the pH scale tells us

    The pH scale tells us how basic or acidic something is. Pure water sits in the middle of the scale, at a pH of seven.

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  6. Health & Medicine

    New spray gel moves drugs deep to treat frostbite

    New gel spray sends healing ingredients deep into frostbite injuries to promote healing.

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  7. Earth

    Help for a world drowning in microplastics

    Microplastic pollution in our oceans and lakes is a problem. Scientists are testing solutions — from more biodegradable recipes to nanotechnology.

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  8. Physics

    Like Magneto? Microcrystals give magnets superpower over living cells

    New iron-rich protein crystals could help researchers better understand the nerve cells that control movement and sensation. All they need are magnets.

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  9. Plants

    Scientists look to hack photosynthesis for a ‘greener’ planet

    Photosynthesis turns sunlight into energy for plants. Scientists want to know more about it, imitate it — even improve it.

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  10. Chemistry

    Chemistry’s ever-useful periodic table celebrates a big birthday

    2019 is the International Year of the Periodic Table. But the traditional chart is just one of many shapes that chemists and other scientists have developed to organize the elements.

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  11. Chemistry

    Leftover opioids? Teen finds possible way to kill such pills

    Mercedes Randhahn, 14, of Ogden, Utah, came up with a possible way to chemically deactivate unused opioid pills. Her research paved the way to a $2,500 prize.

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  12. Chemistry

    Explainer: What are acids and bases?

    These chemistry terms tell us if a molecule is more likely to give up a proton or pick up a new one.

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