energetics

• Heat energy change

  Q
• equation for Q

  mass x constant X delta T
• delta T

  change in temperature
• Delta H


  Q / moles
• Exothermic

  • Gets hotter, gives out heat , temp goes up , - delta H , gives out heat
• endothermic 


  gets colder, takes in heat, temp goes down, + delta H,
• Bond breaking


  requires energy, endothermic
• Bond making


  releases energy, exothermic