solutions

• define solute


  dissolved substance
• define solvent


  the liquid which can be used to dissolve a substance
• define insoluble 


  it can’t dissolve
• define soluble


  it can dissolve
• define evaporation 


  evaporation happens when liquid particles have enough energy to become gas particles at the surface of a liquid
• what are ceramics


  a huge number of atoms joined together in one big structure
• define polymers


  a substance with very long molecules. it has identical groups of atoms repeated many times
• What happens when a soluble solid dissolves in a liquid?

  The solid particles are separated and the solid can no longer be seen.
• What is the term for the solid that dissolves in a liquid?

  The solid is called the solute.
• What is the term for the liquid in which a solid dissolves?

  The liquid is called the solvent.
• What happens to liquid particles when they are given enough energy?

  They can change their state and evaporate.
• Which particles can evaporate below the boiling point of a liquid?

  Only the particles on the surface of the liquid can evaporate.
• How do liquid particles lose their extra energy during evaporation?

  They lose energy to surrounding air particles.
• How can an insoluble solid be separated from a liquid?

  By using filtration.
• What is the residue in a filtration process?

  The solid that does not go through the filter paper.
• What is the filtrate in a filtration process?

  The liquid that goes through the filter paper.
• Why are solvents useful?

  They dissolve solids.
• What characteristic do solvents have that makes them easy to use in applications like paint or ink?

  They have low boiling points.
• Why might you need to select a different solvent for a permanent marker compared to a felt tip pen?

  Because the ink of a permanent marker is not soluble in water.
• What are the two processes used to recover a soluble solid from a liquid?

  Evaporation followed by crystallisation.
• What does evaporation do in the process of recovering a soluble solid?

  It removes most of the liquid.
• How does the temperature and light conditions affect the size of crystals formed during crystallisation?

  Crystals will be bigger in a cold and dark place than in a hot and sunny place.