1. In chemical reactions, the total weight of the products ___________ the total weight of the ________________. 2. State the Law of Definite Proportions. 3. Write symbols for the following elements. lithium carbon oxygen neon magnesium silicon sulfur argon calcium titanium chromium iron nickel zinc arsenic bromine strontium radium silver tin iodine lanthinum platinum mercury 4. Name the elements having the following symbols: B N F Na Al P Cl K V Mn Co Cu Ge Cd Ba W Au Pb Th U 5. Write the formulae for the following substances: water carbon dioxide ammonia sulfuric acid hydrogen gas oxygen gas ozone nitrogen gas sucrose glucose 6. Indicate whether each of the following substances is molecular or ionic: H2O NaCl CaO NO Cl2 CCl4 CO2 Al2O3 HNO3 P4 7. Balance the following chemical equations: H2 + O2 --> H2O Ca + O2 --> CaO Al + O2 --> Al2O3 Al + F2 --> AlF3 Na + Br2 --> NaBr NaOH + H2SO4 --> Na2SO4 + H2O C2H2 + O2 --> CO2 + H2OAnswers - Please check after completing