1. Match the following terms with its appropriate explanation [1 mark each]: (1) Thermochemistry (2) Heat...

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1. Match the following terms with its appropriate explanation [1 mark each]: (1) Thermochemistry (2) Heat (3) Exothermic reaction Endothermic reaction (4) (6) (5) Isolated System Enthalpy Calorimeter (7) (8) (9) Potential Energy Closed System (10) Temperature (11) Specific heat capacity (12) Hess's Law (13) Standard Enthalpy of formation (14) Reaction Rates (15) Rate-limiting step (16) Elementary Step (17) Instantaneous rate of reaction (18) Catalyst a. b. C. Amount of energy transferred between substances (q) d. Study of the heat changes during chemical reaction Measures the energy absorbed or released Releases energy Step of chemical reaction that cannot be explained by simpler reactions e. f. g. h. i. j. k. 1. m. n. 0. P. 9. The total energy of a substance (H) Absorbs energy r. A chemical that increases the reaction rate The enthalpy change for the conversion of reactants to products is the same whether the conversion occurs in one step or several steps The rate of chemical reaction at a single point in time the quantity of thermal energy required to raise the temperature of 1g of a substance by 1C The slowest step of reaction mechanism Enthalpy of formation of one mole of the substance from elements in their standard forms under standard condition A system in which energy can enter and leave, but matters cannot The energy of body or a system due to its position and composition Measure of average kinetic energy of particles in a substance Measurement of how fast reactants are used or products are made An ideal system that cannot exist in real life 1. Match the following terms with its appropriate explanation [1 mark each]: (1) Thermochemistry (2) Heat (3) Exothermic reaction Endothermic reaction (4) (6) (5) Isolated System Enthalpy Calorimeter (7) (8) (9) Potential Energy Closed System (10) Temperature (11) Specific heat capacity (12) Hess's Law (13) Standard Enthalpy of formation (14) Reaction Rates (15) Rate-limiting step (16) Elementary Step (17) Instantaneous rate of reaction (18) Catalyst a. b. C. Amount of energy transferred between substances (q) d. Study of the heat changes during chemical reaction Measures the energy absorbed or released Releases energy Step of chemical reaction that cannot be explained by simpler reactions e. f. g. h. i. j. k. 1. m. n. 0. P. 9. The total energy of a substance (H) Absorbs energy r. A chemical that increases the reaction rate The enthalpy change for the conversion of reactants to products is the same whether the conversion occurs in one step or several steps The rate of chemical reaction at a single point in time the quantity of thermal energy required to raise the temperature of 1g of a substance by 1C The slowest step of reaction mechanism Enthalpy of formation of one mole of the substance from elements in their standard forms under standard condition A system in which energy can enter and leave, but matters cannot The energy of body or a system due to its position and composition Measure of average kinetic energy of particles in a substance Measurement of how fast reactants are used or products are made An ideal system that cannot exist in real life

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