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WORKSHEET 9                                  Mixtures                                                                     Name: ................................................................... Class: ..................... Date: ........................
                                                        Mixtures
                                                                                                                                     WORKSHEET 20 SolutionsSolutions



           3- Look at the figure and answer the questions.                                                                           What happens when….?



          1- What is this process called?

          2- What is it used for?                                                                                                       1- We increase the temperature when making a solution.

          3- What kind of mixture is in the figure?                                                                                      ....................................................................................................


          4- Can we use this process to separate                                                                                        2- We increase the amount of a solvent when making a solution.

               aluminum from sand? Why?                                                                                                 ....................................................................................................


                                                                                                                                        3- You stir sand with water.



                         sand                                                                                                           ....................................................................................................
                                                                                                                                        4- You mix salt with water.


                                                                  sand + iron fillings                                                   ....................................................................................................
                       iron fillings                                                                                                     5- Grinding a solid before stirring it with a solvent.



                                                                                                                                        ....................................................................................................

           4- Look at the figure and answer the questions                                                                               6- You dissolve 3 gm. of sugar cubes in 200 ml. and 3 gm. of



          1- What is this process called?                                                                                                   powdered sugar in the same amount of water.


          2- What is it used for?                                                                                                       ....................................................................................................

          3- What kind of mixture is in the figure?                                                                                      7- You mix a cube of sugar with 200 ml. of water and another


          4- Is it used for soluble or insoluble materials?                                                                                 with 100 ml. of water.


                                                                                                                                        ....................................................................................................

                                                                                                                                        8- The amount of the solute increases.
                                                                          water
                                                                                                                                        ....................................................................................................
                                        salt
                                                                                                                                        9- You put an insoluble substance in a solvent.

                                                                                                                                        ....................................................................................................


                                                                                                                                        10- You shake mud in water.


                                                                                                                                        ....................................................................................................
                                                                                            Teacher’s note
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