7.2 Evidence of a Chemical Reaction

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7.3 The Chemical Equation: Combustion of Methane • How many oxygen atoms are on each side of the equation? The left side of the equation has two oxygen atoms and the right side has three. Atoms cannot simply appear or disappear in chemical equations. We must account for the atoms on both sides of the equation.
7.3 The Chemical Equation: Combustion of Methane Notice also that the left side of the equation has four hydrogen atoms and the right side only two. To correct these problems, we must create a balanced equation.
Page 1 and 2: 7.2 Evidence of a Chemical Reaction
Page 3 and 4: 7.2 Evidence of a Chemical Reaction
Page 5: 7.3 The Chemical Equation: Combusti
Page 9 and 10: 7.4 How to Write Balanced Chemical
Page 11 and 12: 7.4 How to Write Balanced Chemical
Page 13 and 14: Example: The reaction of solid alum
Page 15 and 16: 7.5 Aqueous Solutions and Solubilit
Page 17 and 18: FIGURE 7.6 Ions as conductors Stron
Page 21 and 22: Solubility: Mostly Insoluble • Fo
Page 23 and 24: 7.6 Precipitation Reactions: Reacti
Page 25 and 26: 2KI(aq) + Pb(NO 3) 2(aq) PbI 2(s)
Page 27 and 28: 2KI(aq) + Pb(NO 3) 2(aq) PbI 2(s)
Page 29 and 30: Writing Equations for Precipitation
Page 31 and 32: Writing Equations for Precipitation
Page 33 and 34: 7.7 Writing Chemical Equations for
Page 35 and 36: Molecular, Complete Ionic, and Net
Page 37 and 38: • Acid-base reactions 7.8 Acid-Ba
Page 39 and 40: 7.8 Gas Evolution Reactions
Page 41 and 42: 7.9 Oxidation-Reduction Reactions
Page 43 and 44: 7.9 Oxidation-Reduction Reactions
Page 45: 7.10 Classifying Chemical Reactions

7.2 Evidence of a Chemical Reaction

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