Section outline

  • Learning Outcome:

    Investigate how dyes are used to make traditional clothing. 

    Success Criteria:

    1) Compare insoluble and soluble solutions. 

    2) Describe the difference between dilute and concentrated solutions.

    3) Explain how concentration of solutions can affect dye work (and other technological applications). 


    Activities:

    1) Monday: Finish your investigation into what may impact a substance's ability to dissolve.  Be prepared to discuss in the Hangout tomorrow

    2) Tuesday 9 am Google Hangout meet.google.com/fiz-vrbm-yme:  Education Perfect work assigned on information on solute, solvent and solutions (it is assigned and should be completed by Wednesday) 

    3) Thursday/Friday: Working with concentrations -  The amount of solute that dissolves will change the concentration of a solution.  Dilute solutions have less solute than a concentrated solution. 
    For example, think of urine.  If you are hydrated, you have lots of water (solvent) in your pee and only a little bit of salt, the waste (solute).  This means your pee is light yellow.  If you are dehydrated, you have less water in your pee to dilute the waste.  This means your urine is concentrated and a darker colour of yellow. 

    Check out this YouTube Clip:

    You can change the concentration by adding more / less water.   Recreate this investigation but also add in 1 drop of food colouring for every 1 teaspoon of salt.  Watch what happens to the colour of the solution.  FILM your investigation and post it (or a link to it) in Google Classroom with a paragraph explaining (IN YOUR OWN WORDS) why the solution's colour is changing.  Include the key words: dilute, concentrated, solution, solvent, solute.