ID: A The sheet structure of carbon is a. diamond. b. graphite. c. fullerene. d.
ID: 571280 • Letter: I
Question
ID: A The sheet structure of carbon is a. diamond. b. graphite. c. fullerene. d. industrial diamond. e. rolled carbon steel. Thermochemistry is the study of how a. kinetic energy b. temperature c. energy 30. is produced and consumed during chemical reactions. d. work e. potential energy 31. In addition to identifying the reactants and products, a thermochemical reaction equation provides a. b. c. d, e· the amount of energy released or absorbed. the temperature. the work needed to drive the reaction. the cost of the reactants. the energy of the products. 32· The capacity to do work is a definition of a. heat. d. energy. e. ambition. c. work -33. Durin g a(n) process, energy is transferred to the system from the surroundings. a. exothermic b endothermic c. thermodynamic e. physical When solid sodium hydroxide (NaOH) pellets are dissolved in water, the temperature of the water and beaker rises. T is an example of 34. a. an exothermic process. b. an endothermic process. c. a combustion reaction. d. e. a thermodynamic cycle. all solvation processes. 35. Ifa chemical reaction causes the temperature of the container to drop, it is a(n) -reaction. a. endothermic b. exothermic c. spontaneous d. fast e. slow The inside of a perfectly insulated capped thermos bottle is an example of a. b. c. 36. an undefined system. a system plus surroundings. d. an open system. a closed system. an isolated system. e.Explanation / Answer
29. Option B, Graphite has sheet (layer) structure while diamond has gaint structure.
30. Option C, energy. Thermochemical reactions involves production and consuming of energy.
31. Option A, tells about energy absorption and release (exothermic and endothermic)
32. Option D, energy
33. Option C, thermodynamic process
34. Option A, exothermic reaction as energy is released
35. Option B, exothermic since decrease in temperature
36. Option C, isolated system since there is no change in both heat and energy