7. Identify each of the following reactions as endothermic or exothermic a) A match burns after its rubbed on a rough surface exothermic b) Na(s) + Cl2(g) → NaCl2(s) + thermal energy c) Thermal energy + C(s) + H2(g) + O2(g) → CH3CH₂OH - Heating a frying pan that contains a raw egg starts a chemical reaction. When the source of the heat energy is removed, the reaction stops. Adding concentrated sulfuric acid to water raises the temperature of the solution d) www. e) f) Heat + N2(g) + O2(g) → NO2(g)

7. Identify each of the following reactions as endothermic or exothermic a) A match burns after its rubbed on a rough surface exothermic b) Na(s) + Cl2(g) → NaCl2(s) + thermal energy c) Thermal energy + C(s) + H2(g) + O2(g) → CH3CH₂OH - Heating a frying pan that contains a raw egg starts a chemical reaction. When the source of the heat energy is removed, the reaction stops. Adding concentrated sulfuric acid to water raises the temperature of the solution d) www. e) f) Heat + N2(g) + O2(g) → NO2(g)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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