Chemistry

  1. Chemistry

    Experiment: Kimchi chemistry

    In this cooking and food science project, we make kimchi from scratch and investigate changes in pH and glucose as it ferments.

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  2. Physics

    Scientists Say: Supercool

    When a liquid is supercooled, it has been chilled below its freezing point without freezing.

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  3. Chemistry

    Creation of quantum dots wins 2023 chemistry Nobel

    The award honors three scientists who discovered and built quantum dots, which are now used in everything from TVs to medical tools.

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  4. Chemistry

    Scientists Say: Rare earth element

    Rare earth elements aren’t all that rare — but skyrocketing demand for these metals makes them precious.

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  5. Animals

    A new technique creates glowing whole-body maps of mice

    Removing cholesterol from mouse bodies lets fluorescent proteins seep into every tissue. That has helped researchers map entire body parts.

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  6. Agriculture

    Cow dung spews a climate-warming gas. Adding algae could limit that

    But how useful this is depends on whether cows eat the red algae, a type of seaweed — or it gets added to their wastes after they’re pooped out.

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  7. Tech

    High-tech solar ‘leaves’ create green fuels from the sun

    Chemists make a liquid alternative to fossil fuels from carbon dioxide, water and the sun. Their trick? They use a new type of artificial leaf.

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  8. Chemistry

    Scientists Say: Valence electrons

    These far-out electrons do the hard work when it comes to chemical reactions.

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  9. Plants

    A single particle of light can kick off photosynthesis

    In a new experiment with bacteria, a lone photon sparked the process of turning light to chemical energy.

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  10. Chemistry

    Experiment: Test the effect of temperature on reaction time

    Alka-Seltzer tablets fizzle furiously when dropped into water. Can you make Alka-Seltzer fizz faster or more loudly by changing the water’s temperature?

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  11. Physics

    Scientists Say: Explosion

    Explosions happen when chemical or nuclear reactions blow out a lot of heat, noise and expanding gas.

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  12. Health & Medicine

    New patch might replace some finger-prick testing of blood sugar

    A finalist at Regeneron ISEF created a wearable patch that turns yellow when someone’s blood-sugar level gets high enough to need an insulin shot.

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