HS-PS1-4

Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.

More Stories in HS-PS1-4

  1. Space

    Explainer: Stars and their families

    Most pinpoints that light the night sky are raging infernos we call stars. As adults, many will create new elements that they later cast off into the cosmos.

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  2. Chemistry

    Batteries should not burst into flames

    Because lithium-ion batteries power modern life, they need to store a lot of energy. Now scientists are focusing on making them safer.

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  3. 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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  4. Physics

    Closing in on fusion energy

    Scientists blasted a tiny capsule of hydrogen with laser beams, setting off a reaction that released more energy than in earlier experiments. Still, scientists remain a long way from creating a reaction that releases more energy than it needs to get started.

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