Exothermic & Endothermic Reactions

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  1. 4. Sign for H in an exothermic reaction
  2. 5. The term used to define the average total kinetic energy of the atoms and molecules in a system
  3. 6. Type of reaction where energy is gained because the energy of the products is greater than the energy of the reactants
  4. 10. Name of scientist after whom the law is named whereby the enthalpy change accompanying a chemical change is independent of the route by which the chemical change occurs
  5. 11. The type of motion contributing to the major source of kinetic energy in solids
  6. 13. A type of motion contributing to the kinetic energy of atoms or molecules in gases and liquids but essentially absent in solids and undefined for atoms since they are spherically symmetric
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  1. 1. Sign for H in an endothermic reaction
  2. 2. Required to break bonds in the reactants for a chemical reaction to occur
  3. 3. Type of reactions where substances are burnt in the presence of oxygen and release large amounts of energy
  4. 5. A type of motion contributing substantially to the kinetic energy of atoms or molecules in gases but absent in solids
  5. 7. Type of reaction where energy is released because the energy of the reactants is greater than the energy of the products
  6. 8. Name of temperature scale used to measure temperature relative to absolute zero
  7. 9. The term given for for the heat absorbed in a chemical reaction
  8. 12. Name of temperature scale used to measure temperature relative to the freezing point of water being assigned as zero