Ok, we can make mixtures and solutions, but what if we want to separate them?

Today we will separate water from sand using three different techniques. Do you remember what they are? Filtration, decanting and sieving. You'll see today that these methods wouldn't make water ready for drinking, but these steps are used when separating water from other substances.

    

Your job today will be to record your observations during the experiments. If you are chosen to help as a science assistance, please be sure to record your observations when you return to your spot. Watch carefully and remember "what good scientists do!"

We have spent time look at particle theory, heat transfer and solutions/mixtures. We can use this learning to think about what happens when we want to separate mixtures. Today we will learn MANY key terms used to describe separation techniques. Later, we will create our own experiment to separate a solution and evaluate it's efficiency. We will start by watching a video, then dig deeper into the key terms.

 


Decanting - Izabella, Mia C.



Magnetism - Logan, Jacob

Chromatography - Kally, Ella

Distillation - Nick, Raman, Nathi, Sham, Ashish

Evaporation - Alex, Ian,

Filtration - Seairra, Hailey
This is filtration because they used a funnel to kept the mud and the water from going into the cup. The reason why that happened was because they put a piece of paper inside the funnel to collect the mud particles. The funnel kept the mud from going into the cup.

 


Sedimentation - Evan, B

Sifting/sieving - Ryan, Beckham, Kurt, Carson, Chris, Mia D.



The reason this works is because there are holes that when you shake the strainer, the holes are small enough to let one solute pass through while leaving the other one in the strainer. Therefore separating the two substances. - Ryan, Beckham and Carson

After looking at these separation techniques, why do you think it is important that we have methods for separating mixtures? How can filtering, decanting and sieving water and sand related to our mid-year project and our discussions around the world's fresh water supply?

Today we will read an article about a young girl who has creating a filtration system to help improve water quality. Next we will develop our own methods to separate water and sand.