SCIENCE: Separation- learn how to separate sand, rocks, salt and rice

HOW TO SEPARATE NATURAL MATERIALS                                                                           Learn how to separate different materials using these simple instructions.

YOU WILL NEED;   

  1. Sand
  2. Pipette
  3. Salt
  4. Stones
  5. Containers (for holding the items as well as separating them)
  6. Rice
  7. Funnel
  8. Beakers
  9. Sieve
  10. Water    

                                                                                   METHOD

  • Firstly, grab a bowl.
  • Secondly, pour the sand, salt, rice and stones into the bowl and mix them together thoroughly, adding  more of the ingredients if needed.
  • Once all of your ingredients are thoroughly mixed, fill a cup with the mixture. This will be the amount that you separate.
  • Then, take the stones out of the cup and place it into a clean, dry container. 
  •  Now, pour your remaining mixture into the sieve and shake well above another container until all of the sand has fallen out of the sieve.
  • Rinse the rice under a cold tap (whilst it is still in the sieve) until any bits of dirt remaining from the sand has been washed out.
  • After you have rinsed the rice, our it into  one of your other containers.
  • Now, run fill a container with warm water. Pour the sand into the water. The salt will have dissolved into the water, leaving the sand to sink into the bottom.
  • Use the pipette to carefully remove the water into a separate container , leaving the sand in the bottom of the first container. Repeat these steps until the water is clear. (the sand will  stain the water as well as float around, so you have to make sure the water is clear otherwise the next step will not work. )
  • Penultimately,  boil the salt water until all of the water has evaporated. Scrape the salt off of the inside of the pan and pour it into the container. 
  • Finally, empty the sand into the last container. 

                                  There! You have separated all of the ingredients!                                                   

 

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