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.

More Stories in HS-PS1-2

  1. Chemistry

    Let’s learn about acids and bases

    Acids give away particles with positive charge. Bases accept positively charged particles. They are both critical for chemical reactions.

    By
  2. Chemistry

    A new catalyst turns greenhouse gas into jet fuel

    The catalyst is an improvement over its predecessors. Made of cheap materials like iron, it produces jet fuel in a single step.

    By
  3. Chemistry

    Study acid-base chemistry with at-home volcanoes

    Baking soda volcanoes are a fun demonstration, and with a few tweaks they can be an experiment, too

    By
  4. Physics

    The exotic ‘atom’ positronium surprises scientists

    New measurements of a weird but simple atom, one without a nucleus, suggest it may have unexpected properties. Scientists find this troubling.

    By
  5. Tech

    Here’s one way to harvest water right out of the air

    Need water but you have no access to rain, lakes or groundwater? Materials known as metal-organic frameworks could be used to slurp that water from the air, new data show.

    By
  6. 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.

    By
  7. 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.

    By
  8. 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.

    By
  9. 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.

    By