What is uranium? Atoms, elements, chemistry
Diagram of a uranium atom Uranium is a rare atom, not just on Earth but also in space and on other planets. There is not very much uranium anywhere. That's [...]
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06, 2017
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06, 2017
What is tin? Atoms, elements, chemistry
Like the other metals, tin is one of the heavier kinds of atoms. Every atom of tin has 50 protons and 69 neutrons in its nucleus (depending on the isotope; the exact [...]
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06, 2017
What is sulphur? Atoms, elements, chemistry
Diagram of a sulphur atom Sulphur atoms fall near the middle of the scale: they are heavier than silicon but lighter than iron. Every atom of sulphur has 16 protons [...]
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06, 2017
What is sodium? Atoms, elements, chemistry
Diagram of a sodium atom Sodium is an atom that has 11 protons and 12 neutrons in its nucleus and 11 electrons circling around its nucleus. Like other light atoms [...]
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06, 2017
What is phosphorus? Atoms, elements, chemistry
Diagram of a phosphorus atom Phosphorus atoms have fifteen protons and sixteen neutrons, so they're just a little lighter than sulphur atoms, in the middle of the range for atoms. [...]
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06, 2017
What is nitrogen? Atoms, Elements, Chemistry
Diagram of a nitrogen atom Inside a red giant star, the star smashes lighter atoms together. Smashing atoms gets the star energy to burn, and also leaves extra heavier atoms. Nitrogen [...]
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06, 2017
What is iron? Atoms, elements, chemistry
Diagram of an iron atom When a red giant star finishes changing all of its helium into carbon and oxygen, it then starts to turn the carbon and oxygen atoms into iron atoms. Iron [...]
