Chemistry & Dictionaries & Glossaries
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KELVIN TEMPERATURE SCALE
Proton. Protons are small, positively-charged atomic particles
Atomic Weight. An atom's atomic weight measures the total of the mass of the protons, neutrons, and electrons.
STP means standard temperature and pressure.
Nucleus. The nucleus of an atom is its tiny central region, and comprises the bulk of the atom's mass, containing the...
Atomic Number. An atom's atomic number of an element is the number of protons in the nucleus of one of its atoms
Geology: Little Explorers Picture Dictionary.
Astronomy glossary explains basic astronomical terms, A.
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