Memory Anchor:

• Super Challenge:

  Stretch:

  Challenge:

Key Questions:

1. What does soluble mean?
   • If a solid can dissolve in particular liquid then it is know as 'soluble'.
2. What does insoluble mean?
   • If a solid cannot dissolve in particular liquid then it is know as 'insoluble'
3. What is a solution?
   • Solutions are mixtures of solids and liquids, in which the solid breaks down and behaves like a liquid.
4. What is the solid that dissolves in a liquid called?
   • The solid added is called the solute.
5. What is the liquid a solid dissolves into called?
   • The liquid added is called the solvent.
6. What happens to the solute particles when they dissolve?
   • The large solute (solid) crystal break down into smaller molecules which fit between the Particles of the solvent.
7. How do the particles behave once they have dissolved?
   • The solid can now behave like a liquid as the small molecules can move relative to each other.
8. What does it mean when a solution is saturated?
   • A saturated solution is one that can not dissolve any more solute.
9. In terms of particles, why does a solution become saturated?
   • When all the gaps between Particles are full, no more solute can be dissolved.
10. Why does increasing the temperature increase the amount of solute that can dissolve?
    • Increasing the temperature of the solvent, increases the speed the Particles collide, creating bigger gaps. This allows more solute to dissolve in the solvent.
11. What is solubility?
    • Solubility is a measure of how much solute can be dissolved in a solvent.