8 results for “element”
Matter, Energy & Physics
The Periodic Table
element she has never handled will behave. Where the elements came from Hydrogen and helium, the two lightest
Article · 4 min read
Matter, Energy & Physics
Atoms
element different from another The number of protons decides what an atom is. One proton is hydrogen
Article · 4 min read
Chemistry
The Chemistry of Life
element: carbon. Why carbon? A carbon atom can form four strong bonds with other atoms at the same
Article · 3 min read
Space & the Universe
Nebulae
element, with helium and traces of everything else. The dust is tiny grains of carbon and silicate
Article · 3 min read
Planet Earth
Inside the Earth
elements such as uranium, thorium and potassium scattered through the mantle and crust. The invisible shield
Article · 4 min read
Life & Biology
Dinosaurs and Mass Extinctions
element rare on Earth but common in asteroids, and containing shocked quartz and tiny glass spheres
Article · 3 min read
Planet Earth
Rocks, Minerals and Fossils
elements decay at perfectly steady rates, and by comparing the amount of a radioactive parent with
Article · 4 min read
Space & the Universe
The Life of a Star
element heavier than iron, and flings them into space. What remains is either a neutron star
Article · 3 min read
