Chemistry
Explainer: Ions and radicals in our world
When atoms get an electric charge, they act very differently. Now called ions, these are behind many aspects of chemistry, including acids and batteries.
MS-PS1-1
Develop models to describe the atomic composition of simple molecules and extended structures.
More Stories in MS-PS1-1
-
ChemistryScientists Say: Bond
In chemistry, this attachment between atoms forms because of the power of attraction. Chemical bonds make up every solid object on Earth.
-
ChemistryNew recycling technologies could keep more plastic out of landfills
Recycling plastics is really hard — especially into useful materials. But new chemical tricks could make recycling easier.
-
ChemistryExplainer: What are chemical bonds?
When various particles, atoms, ions or molecules come together to form a substance, they are held together with chemical bonds.
-
EarthLet’s learn about snow
Snow is more than just frozen water vapor. Scientists are studying everything from its shape to other planets where snowflakes fall.
-
PhysicsPhysicists have clocked the shortest time span ever
The experiment revealed how long it takes light to cross a hydrogen molecule: just a couple hundred zeptoseconds.
-
ChemistryScientists Say: Molecule
A molecule is a group of atoms linked with chemical bonds. It’s the smallest particle of a substance that has all of its chemical properties.
-
ChemistryHere’s how to make flip-flops biodegradable
Innovative flip-flops made from an algae-based plastic decompose in soil or compost. The comfy shoes also avoid use of fossil fuels.
-
EnvironmentPolluting microplastics harm both animals and ecosystems
Researchers are beginning to uncover the real-world impacts of polluting microplastic bits on animals and the ecosystems they inhabit.
-
ChemistryBuild ice towers with bottled water and ice
Pour out liquid water into a solid ice tower. We outline the conditions you’ll need to turn this demonstration into a super-cool experiment.