ASTRO-110 Lecture Notes - Lecture 4: Potential Energy, Electromagnetic Spectrum, Spectroscopy
22 Sep 2020
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Document Summary
Atomic number the amount of protons that an atom has. Atomic mass number is total number of protons and neutrons that an atom has. Isotope versions of an element with different number of neutrons. Compounds are molecules composed of different elements. Molecules respond differently than atoms (molecular oxygen reacts differently. Life on earth is based off organic molecules (or organic compounds) These organic compounds/ molecules are all based off carbon than atomic oxygen) Substances can behave differently in different phases even though they are made of the same atoms or molecules: solid, liquid and gaseous molecule together. Chemical bonds interactions between electrons that hold the atoms in a. The different phases of a substance differ in the strength of their bonds. Melting point temperature in which a substance goes from solid to liquid. Boiling point temperature in which a substance goes from liquid to gas. Process by which molecules break free of their bonds vaporization.
