C5-Energy Changes

Cards (11)

  • in EXOTHERMIC reaction heat is given out
  • exothermic is shown by a rise in temperature
  • exothermic reactions can be shown in hand warmers self heating cans (hot chocolate)
  • in ENDOTHERMIC reactions heat is taken in
  • endothermic reaction is shown as a fall in tempreture
  • endothermic reaction involve sports injury packs like an ice pack
  • required practical
    A) energy released
    B) measuring
    C) lost to the surroundings
    D) neutralisation
  • energy must always be supplied to break bonds
  • energy must be supplied to break existing bonds so the bond is an endothermic process
  • energy is released when new bonds are formed so bonds formation is an exothermic process
  • in exothermic reactions the energy released by forming bonds greater than the energy used to break them. in endothermic reactions the energy used to break bonds is greater than the energy released by forming them