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Molecule stores sunlight and releases heat on demand (Level A1) — a close up of a piece of luggage in ice

Molecule stores sunlight and releases heat on demandCEFR A1

24 Feb 2026

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B2

Adapted from Sean Barton-Sheffield, Futurity • CC BY 4.0

Photo by Hakii official, Unsplash

Level A1 – Beginner
2 min
72 words
  • Scientists made a new molecule for solar heat.
  • The molecule captures sunlight and stores chemical energy.
  • It keeps the energy inside strong chemical bonds.
  • Sunlight makes the molecule change its shape.
  • A little heat makes it release that stored warmth.
  • It can keep energy for many years.
  • The material dissolves in water so it can be pumped.
  • Possible uses are camping and home water heating.
  • Scientists say it is reusable and rechargeable.

Difficult words

  • molecule — very small group of atoms in matter
  • chemical — relating to substances and their reactions
  • dissolve — mix with a liquid and disappear
    dissolves
  • store — keep something to use later
    stores, stored
  • reusable — can be used again many times

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • Would you use this material for camping?
  • Would you like this for home water heating?
  • Do you prefer reusable things at home?

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