lecture 9 - What might happen? Transfer of atoms, ions,...

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Course Outline Section 1: Matter The properties of matter depend on the types and arrangements of atoms, ions, and molecules. Section 2: Change Changes in matter involve the reorganization of atoms, ions, and molecules depending on external conditions. Section 3: Energy Energy is the currency (or coin) exchanged in the making and breaking of bonds. Section 4: Quanta Shining light on matter reveals its underlying composition and structure. Lecture 9 WHAT’S YOUR REACTION? Chemical Reactions Key Idea: Chemical reactions can be classified in terms of ion exchange or electron transfer. Chemical Change is Everywhere Cl (g) + O 3 (g) ! O 2 (g) + ClO (g) 2Ag (s) + S (s) ! Ag 2 S (s) Ca 5 (PO 4 ) 3 OH (s) + NaF (aq) ! Ca 5 (PO 4 ) 3 F (s) + NaOH (aq) 2 KNO 3 (s) + S (s) + 3 C (s) ! K 2 S (s) + N 2 (g) + 3 CO 2 (g) HO - (aq) + HCl (aq) ! H 2 O (l) + Cl - (aq) C 6 H 12 O 6 (s) ! 2CH 3 CH 2 OH (l) + 2CO 2 (g) 2C 8 H 18 (l) + 23O 2 (g) ! 12CO 2 (g) + 18H 2 O (g) + 4CO (g) N 2 + O 2 ! 2 NO " General Patterns Moore et al. textbook, pg 125 Combination Decomposition Displacement Exchange
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Mixing Matter
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Unformatted text preview: What might happen? Transfer of atoms, ions, groups of atoms Exchange: AgNO 3 (aq) + NaCl (aq) ! Exchange/decomposition: CaCO 3 (s) + 2 HNO 3 (aq) ! Transfer of electrons Combination: 10 P (s) + 5 O 2 (g) ! Displacement: Zn (s) + 2 HCl (aq) ! 1. Add nitric acid, HNO 3 (aq) 2. Add sodium hydroxide, NaOH(aq) 3. Heat then filter 4. Add sulfuric acid, H 2 SO 4 (aq) 5. Add zinc, Zn(s), then decant the liquid Copper Cycle Experiment Important Categories of Reactions Combination Decomposition Displacement Exchange Your textbook : REDOX (reduction/oxidation) Precipitation Equilibrium Acid-base Subcategories to explore : NEXT UP: Getting quantitative! (Chapter 4) (Chapter 5) (Lab 3) Wrap-up points: Most reactions involve exchange of ions or electrons Ions combine in ratios that maintaining charge neutrality of products. Redox reactions involve exchange of electrons between reactants....
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lecture 9 - What might happen? Transfer of atoms, ions,...

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