Experiment 3: Chemical Reactions General Chemistry I and II Lab Manual Dakota State University Page 61 of 232 Experiment 3: Chemical Reactions Purpose:To gain experience with the various types of possible chemical reactions. Perturb:To agitate or disturb Background: See “Basic Laboratory Procedures”: pipette, graduated cylinder, balance, glowing splint and Bunsen burner Introduction:Chemistry doesn’t get really interesting until we begin talking about how matter interacts with each other and changes; that is, until chemical reactivity. As with anything else, chemists classify reactions into several different categories, as summarized below. Reaction Type Number of Reactants Number of Products Symbolic reaction Example Addition 2 or more 1 A+B°C 4 Fe (s) + 3 O2(g) °2 Fe2O3(s) Decomposition 1 2 or more A°B+C C6H12O6(s) °6 C (graphite) + 6 H2O (g) Single Replacement 2 2 AB+C°CB+A Cu (s) + 2 AgNO3(aq) °2 Ag (s) + Cu(NO3)2(aq) Double Replacement 2 2 AB+CD°AD+CB NaCl (aq) + AgNO3(aq) °NaNO3
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