There are 2 CARBON, 3 HYDROGEN, and 2 OXYGEN - C2H3O2, There are 6 CARBON, 12 HYDROGEN, and 6 OXYGEN - C6H12O6, Evidence of Chemical Reaction - burning, rusting, digesting, oxidation, Physical Change - boiling, melting, freezing, element made of one type of atom - Oxygen O2 , compound made of more than one type of atom - Water H2O, Reactants: Na and Cl2 - 2Na +Cl2 —> 2NaC, Products: NaCl - 2Na +Cl2 —> 2NaC, There are 2 Hydrogen, and 2 Oxygen - H2O2, mass remains constant - "law of conservation of mass", "Keep Away" from yourself and others - Heating materials: "Hot", Measures Mass - Balance or scale, Measure length - Metric Ruler, "independent variable" will have an effect on "dependent variable"." - Hypothesis, Boron and Silicon... Semi Conductor - Metalloid: "(7) Zig Zag", copper, silver, gold... Metals - conductive, malleable, shinny, carbon, sulfur, phosphorus...Nonmetals - insalator, brittle, dull, Use controls to conduct a testable hypothesis - Scientific Investigation,

Science Review: Safety Chemistry Conservation

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