specific/latent heat

• specific heat capacity definition?

  The specific heat capacity of a substance is the amount of thermal energy needed to increase the temperature of 1 kg of the substance by 1°C.
• specific latent heat definition?

  The specific latent heat of a substance is the amount of energy needed to change the state of 1 kg of the substance without changing its temperature.
• specific heat capacity equation

  
• specific latent heat equation

  
• specific heat capacity vs latent difference

  Although the definition of specific heat capacity seems very similar to the definition of specific latent heat, there is one key difference. Specific heat = energy needed to change one kilogram of a material by 1°C. Latent heat = energy needed to change the state (gas, liquid, solid) of one kilogram of material.
• for this equation you need to work out the mass. You do energy / specific heat capacity x change in temperature. 877.8 /4180 x 30=6.3

  
• all materials increase volume with an increase in temperature
• all substances density decreases as temperature

  increases
• Explain why it takes longer to heat up a large mass of water than a small mass, even if both have the same temperature increase.


  It takes longer to heat a larger mass of water because the energy required to increase the temperature depends on the mass. A larger mass has more particles, which need more energy to increase their temperature by the same amount. The formula for energy required to change temperature is Q = mc\Delta T, where the mass m directly affects the energy needed.