Earth Sciences 1086F/G Lecture Notes - Lecture 3: Planetary System, Deuterium, Atomic Number
15 Apr 2016
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Document Summary
Nebular hypothesis: big bang created matter, most basic forms of this matter combined to form elements, and eventually pockets of matter/elements combined to from star-planet systems. Element: a substance that cannot be beacon down into anything simpler by any chemical means. Atom: a particle of matter that has the unique properties of an element (ie atoms are the essential particles of elements) Ion: an atom with either a negative charge ( i. e. has extra electrons) or an atom with a positive charge (i. e. has a de ciency of electrons) Isotope: all atoms of a particular element have the same # of protons but may contain different #"s of neutrons within their nucleus. Mass number: sum of the protons and neutrons in the nucleus of an atom. Supernova: the explosive death of a massive star. While the explosion is virtually instantaneous, the bright effect can sometimes be seen for weeks, both day and night.
