S1

• elements


  substance made from one kind of atom
• compounds


  two or more elements chemically combined
• saturated solution


  a solution where the maximum amount of solute has been dissolved so no more solute will dissolve in the solution
• mixture

  composed of two or more elements or compounds in no fixed ratio
• homogeneous


  all the components are in the same phase
• heterogeneous

  the components are in different phase