matter, spectroscopy, doppler shift

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Department
Astronomy & Astrophysics
Course
AST201H1
Professor
Stefan Mochnacki
Semester
Winter

Description
Lecture 5 MATTER -matter is made of atoms -1 AU= 215 solar radii (radius of the sun) ATOMIC TERMINOLOY Atomic number= # of protons in nucleus (+ charged) Atomic mass number= # of protons + neutrons Molecules= consist of 2 or more atoms (H2O, CO2) Isotope= same # of protons but different # of neutrons WHAT ARE THE PHASES OF MATTER Solid (ice) Liquid (water) Gas (water vapor) -phases of same material behave differently because of differences in chemical bonds -phase changes ionization: stripping of electrons, changing atoms into plasma dissociation: breaking of molecules int
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