???? FOLLOW OTHER REVIEW CLASSES ???? ✓ Evolution of Atomic Models - • Evolution of Atomic Models Review ✓ Atomic Structure - • Atom and Its Structure Review ✓ Electronic Distribution - • ELECTRONIC CONFIGURATION Review ✓ Periodic Table - • Periodic Table Review ✓ Electronic Distribution & Periodic Table - • Electronic Configuration and Periodic Table... ✓ Chemical Bonds - • CHEMICAL BONDS OCTET RULE ... ✓ Oxides - • OXIDES - REVIEW INORGANIC CHEMISTRY ✓ Periodic Properties - • Periodic Properties Review ✓ Molecular Geometry - • Molecular Geometry Review ✓ Polarity of Bonds and Molecules - • Polarity of Bonds and Molecules ... ✓ Intermolecular Interactions - • Intermolecular Interactions Review ✓ MOL (Atomic Molecular Theory) - • MOL MOLAR MASS REVIEW ✓ Study of Gases - • Study of Gases Review ✓ Thermochemistry - • THERMOCHEMISTRY HESS'S LAW Review ✓ Chemical Kinetics - • CHEMICAL KINETICS REVIEW CLASS ... ✓ Chemical Equilibrium - • Chemical Equilibrium Definition, Const... ✓ Electrochemistry (Introduction) - • NOX REDOX REACTIONS REDOX BALANCING... ✓ Electrochemical Batteries - • ELECTROCHEMICAL BATTERIES GALVANIZED CELLS... ✓ Electrolysis - • ELECTROLYSIS ELECTROCHEMISTRY CLASS OF ... ✓ Organic Chemistry - • Introduction to Organic Chemistry Review ✓ Organic Functions - • Organic Functions Review ✓ Planar Isomerism - • Planar Isomerism Review ✓ Spatial Isomerism - • Spatial Isomerism Review ✓ Acidity and Basicity - • Acidity and Basicity Review ✓ Addition Reactions - • Addition Reactions Review ✓ Elimination Reactions - • Elimination Reactions Review ✓ Organic Redox Reactions - • OXIDATION Reactions in ORGANIC Chem... ✓ Esterification Reaction - • Esterification, Ester Hydrolysis, Sa... ✓ Petroleum - • Petroleum Energy Resources Rev... ✓ Polymers - • POLYMERS POLYMERIZATION REACTION ... Thermochemistry review In this review class we will talk about thermochemistry. We will describe the concept of heat and temperature, enthalpy, state function, endothermic and exothermic processes, standard enthalpy, enthalpy of formation, Hess's law and bond enthalpy. Exercises solved in this thermochemistry review class (UNESP 2011) We can observe daily that chemical reactions and physical phenomena imply energy variations. Analyze each of the following processes, under atmospheric pressure. I. The complete combustion of methane (CH4) producing CO2 and H2O. II. The melting of an iceberg. III. The impact of a brick on the ground when falling from a height h. Regarding the processes analyzed, it can be stated that: a) I is exothermic, II and III are endothermic. b) I and III are exothermic and II is endothermic. c) I and II are exothermic and III is endothermic. d) I, II and III are exothermic. e) I, II and III are endothermic. (UECE 2014) Normally a chemical reaction releases or absorbs heat. This process is represented in the following diagram, considering a specific reaction. Regarding this process, indicate the correct chemical equation. a) H2(g) + 1/2 O2(g) = H2O(l) – 68.3 kcal b) H2O(l) – 68.3 kcal = H2(g) + 1/2 O2(g) c) H2O(l) = H2(g) + 1/2 O2(g) + 68.3 kcal d) H2(g) + 1/2 O2(g) = H2O(l) + 68.3 kcal ???? SUBSCRIBE TO THE CHANNEL ???? Did you like the video? Leave your LIKE! Follow me on social media: ✏️Instagram: / prof_igor_quimica ✏️Twitter: / igorsuga ✏️Blog: https://igorsuga.wordpress.com/ #chemistry #thermochemistry #review