Matter vs Energy  Click here to download the pdf file for Day1 Conservation laws Actually they are kind of the same thing   Substances pure substances Idea of chemical change Idea of "chemical identity" idea of physical change reprise and demo of mixture vs pure substance elements metals nonmetals metalloids compounds mixtures Homogeneous Heterogeneous   Atoms What is an atom Constituents of atoms Idea of charge Idea of electric force Idea of electrical neutrality Constituents of Constituents Size of Atoms idea of scale What holds an atom together Forces of found in nature Some simple atoms and their symbols Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Ions What is an ion Ions tend to come attached to other ions How ions are made Examples of positive ions hydrogen lithium calcium Iron more than one kind is possible Examples of negative ions fluoride oxide hydride a few atoms can form either + or &endash; ions nothing analogous to iron elements which form negative ions do so with a unique charge Nuclear structure What holds the nucleus together (review) discussion followed by writing assignment atomic number mass number Isotopes hydrogen/protium Kleenex/Xerox thing--discussion deuterium tritium Radioactivity alpha beta gamma positron Nuclear Equations Fission Fusion Nuclear weapons Molecules What is a molecule Idea of chemical bond Idea of multiple bonds Relate making and breaking of bonds to chemical change Molecular models What is a model? Ball and Stick Spacefilling Structural formula How to draw Lewis Structures Examples of molecules inorganic vs organic inorganic water hydrogen chloride oxygen nitrous oxide hydrogen sulfide ammonia organic methane ethane ethylene ethyl alcohol methyl mercaptan acetone alanine aspartame How big can a molecule be Macromolecular substances Polymers polyethylene polystyrene proteins Network Solids quartz silicon Ionic Solids sodium chloride Polyatomic ions What are they They are LIKE molecules They are NOT molecules Positive Ammonia Negative phosphate carbonate nitrate nitrite sulfate sulfite Classification of chemical bonds Ionic sodium chloride calcium chloride potassium oxide iron (II) chloride iron (III) chloride Covalent fluorine water methane sulfur dioxide silicon dioxide diamond and graphite Characteristic numbers of bonds carbon oxygen nitrogen fluorine hydrogen Revisit Basics elements and atoms compounds and molecules Answer these questions: Can an element consist of molecules? monatomic, diatomic, triatomic, polyatomic macromolecular ionic Can an element have more than one stable configuration? allotropes Superman and Ferris Bueller oxygen and ozone carbon, graphite and bucky balls red phosphorous and white phosphorous