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
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06, 2017
What is silicon? Atoms, elements, chemistry
Diagram of a silicon atom When a red giant star is getting older and runs out of helium fuel, it starts to convert the oxygen atoms in the star into silicon [...]
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06, 2017
What are quarks? Nuclear physics and science
What are quarks? Tiny particles found all over the universe. What are quarks? Quarks and electrons are the tiniest particles. There are three quarks in every proton and three in [...]
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06, 2017
What is a proton? Atoms and Chemistry
Autzen Stadium, in Eugene Oregon, seats 54,000 people A proton is a tiny particle, smaller than an atom. Protons are too small to see, even with an electron microscope, but [...]
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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 oxygen? Atoms, elements, chemistry
Diagram of an oxygen atom When a star has changed all of its hydrogen atoms into helium, it turns into a red giant and moves on to convert the helium atoms into [...]
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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 a neutron? Atoms and Chemistry
A neutron star (from NASA) A neutron is a tiny particle like a proton, smaller than an atom. Like protons, neutrons are too small to see, even with an electron [...]
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06, 2017
Molecules – Simple science – Chemistry
Protein molecules - each dot is one molecule. What is a molecule? A molecule is a group of two or more atoms that stick together. Molecules (MOLL-uh-cyools) are so small [...]
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06, 2017
What is a meson? Definition of a meson – Chemistry
A meson is much smaller than an atom! These are lithium, cobalt, and oxygen atoms (as in a lithium-ion battery), seen under an electron microscope from Berkeley Labs. What is [...]
