Answer: This is what the video said above the dotted line, under the dotted line is your answer! This answer has a total of 260 words and 1420 characters (letters).
In this experiment, you will be using the physical properties of substances to separate them. This mixture contains salt, iron filings, sand, and raisins. Think about how you might separate these materials.
You can separate the raisins from the rest of the mixture by just picking them out of the mixture with tweezers and making sure none of the other materials stick to them.
Place the raisins in a separate beaker.
You know that iron filings are attracted to a magnet.
Use a magnet to separate all the iron filings.
Put the iron filings in a separate beaker.
You know that salt will dissolve in water.
Add water to dissolve the salt, stirring to make sure that the salt is dissolved.
You will set up a funnel and filter paper and pour the mixture through the filter over another beaker. The water and salt will flow through, and the sand will remain in the filter paper.
Scrape the sand off of the filter paper into another beaker.
You have successfully separated this mixture into its components using the physical properties of each material.
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What we did in this experiment was: separate four substances. Salt, iron fillings, sand, and raisins. First, we mixed all the substances, then we separated them (the separation is the experiment). First, we just picked the raisins out with a pair of tweezers, second, we removed the iron fillings with a magnet because they are magnetic, third because salt dissolves in water, we filled the jar with sand and salt with water, then we used a funnel and filter paper to separate the water from the sand, now the sand and the salt are separated!
The most time-consuming part was probably the separation of the Iron fillings from the beaker filled with the sand and salt that remained after the raisins were picked out. This is important on an industrial scale because you need to know how to properly remove a large amount of something so that the rest remains decontaminated by it.
The only part I would change is when the raisins were picked out, as you can see in the video, not all the sand, salt and iron fillings came off, I would have waited until we separated the salt from the sand so that It could be rinsed off properly.
Many industries use a filtration system so that they may drink clear and clean water, this is similar to the separation of the salt and the sand, but on a much larger scale. People use filters to filter out dirt and bacteria (or the sand in the video) to make sure only clean water comes out.