Energy from fuels (get the grade)

• What is combustion?

  A reaction of a substance with oxygen
• What happens during combustion reactions?

  Energy is released when a substance reacts with oxygen
• What is an endothermic reaction?

  A reaction that absorbs heat energy
• How do endothermic reactions differ from exothermic reactions?

  Endothermic reactions absorb heat, exothermic release heat
• What is specific heat capacity?

  Energy required to heat a substance by 1°C
• Why is the difference in temperature important in specific heat capacity calculations?

  It must be calculated before using the equation
• What is the equation for specific heat capacity?

  Eh = cm(delta)T
• What are the key points about combustion reactions?

  • Combustion reactions release energy
  • Involves a substance reacting with oxygen
  • Can be endothermic or exothermic
• What are the key points about specific heat capacity?

  • Energy required to heat substance by 1°C
  • Important to calculate temperature difference
  • Equation: Eh = cm(delta)T