1. Mixtures Together but Separate

2. Today we will learn…  What is a mixture?  How can it be separated?

3. Mixtures Activity  Take these items back to your desk  1 large beaker (1/2 full with warm water)  1 Small beaker (1/2 full with warm water)  Small handful of beads  Spoonful of sugar  1 empty spoon  Paper towel

4. When I say go…  Jar 1 (large beaker)  Drop beads in  Stir for 30 seconds  Jar 2 (small beaker)  Mix sugar in  Stir for 30 seconds

5.  Which jar is a mixture, Jar 1 or Jar 2?  Both!!!

6. Mixtures  mixture- physical blend of two or more substances.  Not chemically combined  Each keeps its own identity

7. How do we separate mixtures? Let’s try it!  Separate the contents of Jar 1 (beads/water)  Separate the contents of Jar 2 (sugar/water)

8. Separating Mixtures  By Hand  Magnet  Filtration  Evaporation

9. Mixtures  Two types of mixtures: heterogeneous and homogenous  Heterogenous-not uniform in composition  Each section is different from the other

10. Mixtures  Homogenous mixture- two or more substances that appear to be one substance, particles evenly distributed  solution

11.  Solutions may be gases, liquids or solids.  Ex: sugar water, air, sterling silver, etc.

12.  Which type of mixture was Jar 1 (beads/water)? Homogenous or heterogenous?  Heterogenous  Jar 2 (sugar/water)?  Homogenous

13. Solutions (Homogenous mixtures)   Solute – substance that is dissolved. A solute is soluble, or able to dissolve Solvent – substance in which solute is dissolved

14.  In Jar 2, what was the solvent? Solute?  Solvent-water  Solute- sugar

15.  Solubility-ability of a substance to dissolve  3 methods that affect solubility  Mixing, stirring, or shaking  Heating  Crushing or grinding  In Jar 2 (sugar), how did you make sugar dissolve? How could you have made it dissolve even faster?

16. Mixtures How can a mixture of iron fillings and sand be separated?