Chemistry Study Guide Name________________________________________________Date___________Period_________ 1. Write the formula and charge for the polyatomic ions below. LOOK THESE UP on the LIST OF COMMON IONS paper. 1.Carbonate ________________ 2.Phosphate _________________________ 3.Ammonium _______________ 4.Nitrate ____________________________ 5.Hydroxide ________________ 6.Sulfate ____________________________ 2. Place a “P” for physical change, and a “C” for chemical change. 1. Folding paper ________ 5. Burning a candle ________ 2. Making salt water _____ 6. Frying an egg ___________ 3. Copper tarnishing _____ 7. Freezing ________________ 4. Boiling water _________ 8. Forming a precipitate ______ 3. Diatomic Molecules: List the names AND formulas for 7 diatomic molecules 1. _____________________ 5. ________________________ 2. _____________________ 6. ________________________ 3. _____________________ 7. ________________________ 4. _____________________ 4. Give the Lewis Dot Structure for Oxygen, Potassium and then Potassium Oxide, 5. Write the correct chemical formulas. Lithium chloride _______________ Calcium bromide ___________________ Sodium phosphate _____________ Iron (III) fluoride ___________________ Copper (II) carbonate __________ Iron (II) hydroxide _________________ 6. Using your periodic table, please complete the missing information in the table below. Element Name and Symbol Sulfur Mass Number Atomic Number Neutrons 33 18 Potassium 39 Fe 22 19 26 Au 30 79 207 Electrons 16 Argon Pb Protons 118 82 7. How can you tell the difference between an ionic compound and a covalent compound? (List at least 2 differences) Ionic Bond Covalent Bond 8. Create vocabulary cards including a definition and an example for each of the following terms: a. Endothermic g. Precipitate b. Exothermic h. Chemical reaction c. Chemical property i. Law of Conservation of Mass d. Physical property j. Coefficient e. Chemical change k. Reactant f. Physical change l. Product 9. Balance the following reactions and indicate the reaction type. Type of Reaction a. ____Li +___O2 ____Li2O b. ____C2H6 + ___O2 ____CO2 + ____H2O c. ____Na2SO4 + ____Fe(NO3)2 d. ____Cu(OH)2 _______________ _____FeSO4 +____NaNO3 ______CuO + ____H2O _______________ ______________________ _______________ 10. Writing Chemical Equations: Write out the balanced chemical equation and identify the type of reaction. a. Sodium + Sulfur SodiumSulfide _______ + _______ ___________ b. Iron + SilverNitrate Iron(II)Nitrate + Silver _______ + __________ ___________ + ______ , _______________ _______________