Cooling curves

• A to E. Temperature is decreasing. Ek is being transferred to Ep

  
• B to C. Condensing. Temperature is constant specific latent heat of vaporisation. Gas turning into a liquid

  
• C to D. Temperature is decreasing. Equal amounts of Ep and Ek

  
• D to E. Freezing. Temperature is constant. Specific latent heat of fusion . Liquid turning to a solid

  
• E to F. Solid. Temperature is decreasing more Ep than Ek