Chemical Reactions 1. H2 + Cl2 HCl S 2. Na + HCl NaCl + H2 SR 3. Ca + O2 CaO S 4. MnO Mn + O2 D 5. Au2O3 Au + O2 D 6. LiOH + HNO3 LiNO3 + H2O DR 7. O2 + H2 H2O S 8. Zn + CuCl ZnCl2 + Cu SR 9. Fe + O2 Fe2O3 S

Chemical Reactions 10. HI H2 + I2 D 11. Ca + H2O Ca(OH)2 + H2 SR 12. Ba(OH)2 + H3PO4 Ba3(PO4)2 + H2O DR 13. Xe + F2 XeF6 S 14. Ca(OH)2 CaO + H2O D 15. KCN + HNO3 KNO3 + HCN DR 16. Cu + S Cu2S S 17. Cu + HgNO3 Cu(NO3)2 + Hg SR 18. Cl2 + KI KCl + I2 SR

Chemical Reactions 19. Sb + Br2 SbBr3 S 20. NH4NO3 N2O + H2O D 21. H2 22. Rb + FeI3 Fe + RbI SR 23. N2 + O2 N2O3 S 24. HClO4 + Sr(OH)2 Sr(ClO4)2 + H2O DR 3

Reaction Types -empirical formulas S = Synthesis = A + X AX D = element or simple compound element or simple compound compound D = Decomposition = AX A + X compound element or simple compound element or simple compound SR = Single Replacement = AX + B BX + A compound element compound element AX + Y AY + X DR = Double Replacement = AX + BY BX + AY compound compound compound compound 4

-balancing an equation -the Law of Conservation of Matter states that 25. C5H12 + O2 CO2 + H2O compound element compound compound AX + Y AY + XY = Combustion Chemical Reactions -balancing an equation -the Law of Conservation of Matter states that matter is neither created or destroyed by ordinary chemical means, only changed in form 1 C5H12 + 8 O2 5 CO2 + 6 H2O 5 Carbon atoms 5 1 Carbon atoms 12 Hydrogen atoms 12 2 Hydrogen atoms 16 2 Oxygen atoms 16 11 3 Oxygen atoms

26. H2SO4 + Al(OH)3 Al2(SO4)3 + H2O 3 H2SO4 + 2 Al(OH)3 Al2(SO4)3 + 6 Hydrogen sulfate Aluminum hydroxide Aluminum sulfate Hydrogen hydroxide 3 H2SO4 + 2 Al(OH)3 Al2(SO4)3 + 6 H2O 2 1 Aluminum atoms 2 Aluminum atoms 12 8 5 Hydrogen atoms 12 2 Hydrogen atoms 3 1 Sulfur atoms 3 Sulfur atoms 18 10 7 Oxygen atoms 18 13 Oxygen atoms 27. C4H10 + O2 CO2 + H2O butane Oxygen Carbon dioxide water 2 C4H10 + 13 O2 8 CO2 + 10 H2O 8 4 Carbon atoms 8 1 Carbon atoms 20 10 Hydrogen atoms 20 2 Hydrogen atoms 26 2 Oxygen atoms 26 12 3 Oxygen atoms

Predicting and Balancing Equations -the French chemist ________ __________observed that the ______ _____ of the _________ always _______ the ______ _____ of the _________ in a ________ ________ Antoine Lavoisier total mass reactants equaled total mass Antoine Lavoisier (1743-1794) products chemical reaction -__________ is considered to be the _______ of _______ __________ Lavoisier Father Modern Chemistry

Predicting and Balancing Equations -_________ developed a more accurate description of the ____ of ____________ of _____, was the first to describe the type of _________ _______ called ___________, and developed the system of _______ __________ that we still use today Lavoisier Law Conservation Mass chemical reaction combustion naming compounds -as a _________ _________ was __________during the ______ of ______ in _____ during the _______ __________ nobleman Lavoisier guillotined Reign Lavoisier conducting an experiment on respiration during the 1770’s, while his wife, Marie, took notes Terror 1794 French Revolution

Predicting and Balancing Equations Aluminum sulfate + Lithium Lithium sulfate + Aluminum compound element compound element AX + B SR BX + A 1 Al2(SO4)3 + 6 2 Li 3 Li2SO4 + 2 Al 1. Identify the type of substances in the reactants or products 2. Identify the reaction type, using empirical formulas 3. Using empirical formulas, predict the names of the products 4. Write correct chemical formulas for reactants and products 5. Use coefficients to balance equation

Reaction Types I. Synthesis -chemical reactions in which ____ or _____ simpler substances react to form ____ ________ two more one product -Example #1: 2 Mg + O2 2 MgO -Example #2: 2 H2 + O2 2 H2O -each of the two examples of chemical reactions are also ____________, as _____ energy is _________ in the formation of ____ ______ than is required to break the bonds in the initial __________ exothermic more released new bonds reactants

Combustion of paraffin Reaction Types II. Combustion -chemical reactions in which _______ combines with a substance to form ____ or _____ _______ and releases ______ in the forms of ____ and _____ oxygen one more oxides energy heat light -Example #1: 1 CH4 + 2 O2 1 CO2 + 2 H2O -Example #2: 1 C2H5OH + 3 O2 2 CO2 + 3 H2O -Example #3: 1 C25H52 + 38 O2 25 CO2 + 26 H2O -each of the three examples of chemical reactions are also ____________, as _____ energy is _________ in the formation of ____ ______ than is required to break the bonds in the initial __________, and the ________ are _____ stable than the __________ exothermic more released new bonds Candle burning – Combustion of paraffin reactants products more reactants