20 results for “atom”
Matter, Energy & Physics
Atoms
atoms, and atoms are almost entirely empty space. Here is what they are, how we know
Article · 4 min read
Matter, Energy & Physics
The Periodic Table
atom in the universe, arranged so that its pattern predicts how each one behaves. Here is how to read
Article · 4 min read
Chemistry
Chemical Reactions
Atoms swapping partners Everything around you is made of atoms joined together by chemical bonds. In a reaction
Article · 3 min read
Matter, Energy & Physics
The Quantum World
atoms the universe stops behaving sensibly. Particles are waves, things exist in several states at once
Article · 4 min read
Matter, Energy & Physics
Electricity and Magnetism
atoms, and atoms contain charged particles: positive protons in the nucleus and negative electrons around it. Normally
Article · 4 min read
Chemistry
The Chemistry of Life
atom can form four strong bonds with other atoms at the same time, including with other
Article · 3 min read
Chemistry
Water: The Strangest Ordinary Substance
atom and two hydrogen atoms, which is where the formula H2O comes from. The atoms are not in a straight
Article · 3 min read
Matter, Energy & Physics
Light
atoms do the same. It is how the universe works at small scales, and nobody finds
Article · 4 min read
Planet Earth
Rocks, Minerals and Fossils
atoms, a crystal. Quartz is silicon and oxygen. Halite, table salt, is sodium and chlorine. Diamond
Article · 4 min read
Space & the Universe
The Big Bang
atom and ray of light, was once packed into a space far smaller than a grain
Article · 4 min read
Space & the Universe
Nebulae
atoms; when the electrons recombine, the atoms emit light at specific colours. Hydrogen's signature is a deep
Article · 3 min read
Planet Earth
The Atmosphere
atoms instead of two, and it absorbs almost all the Sun's ultraviolet light, the radiation
Article · 4 min read
Chemistry
Acids and Bases
atom that has lost its electron, leaving a single bare proton. These protons are very reactive
Article · 3 min read
Matter, Energy & Physics
Energy and Heat
atoms and molecules. The molecules of the air around you are flying about at hundreds of metres
Article · 4 min read
Space & the Universe
Dark Matter and Dark Energy
atom for over thirty years. So far, nothing. The universe speeding up In the 1990s two teams
Article · 3 min read
Life & Biology
Dinosaurs and Mass Extinctions
atomic bombs, blasted a crater 180 kilometres wide, and triggered earthquakes, tsunamis and a rain of molten
Article · 3 min read
Planet Earth
Inside the Earth
atoms into a rigid crystal. The inner core is slowly growing as the planet cools and more
Article · 4 min read
The Human Body
The Senses
atom. It is also fragile. Hair cells do not regrow, and loud noise destroys them permanently
Article · 4 min read
Matter, Energy & Physics
Gravity
atomic clocks on GPS satellites, higher up where gravity is weaker, gain about 45 microseconds a day on clocks
Article · 4 min read
The Human Body
The Skeleton and Bones
Your 206 bones are living tissue: they grow, heal, make your blood and rebuild themselves completely
Article · 5 min read
