Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What type of energy do particles gain when they are heated?
   • Particles gain kinetic (movement) Energy when they are heated.
2. How does the internal energy of a material change as state changes?
   • A change of state from solid to liquid, liquid to gas or solid to gas requires an increase of the internal Energy of the material.
3. Why does the temperature of water not increase during melting and evaporation?
   • An increase of the internal Energy of the material does not always result in a increase in temperature. Some Energy is used in order to change state.