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How do you separate a mixture of sand salt chalk dust and amp iron filings.?
Wiki User
∙ 6y ago
First remove iron filings with a magnet. That leaves sand, salt and chalk dust. Add water which dissolves the salt, and filter leaving the sand and chalk dust on the filter paper. Put that back in water and add acid to dissolve the chalk dust (CaCO3) leaving the sand as a solid. Filter to obtain the sand. The chalk dust will now be in the acid as CO2 and H2O and the Ca salt of the acid.
Wiki User
∙ 6y ago
Wiki User
∙ 6y agoFirst add water to the mixture. Salt will be dissolved in the water. Filter it. The filtrate is heated to get back the salt. Dry the rest of the mixture with hair drier. Remove the iron filings with the help of magnet. This will separate the iron filings. Then give heat to the remaining mixture of chalk dust and sand. Chalk will be converted into calcium oxide. Dissolve it in the water. It will become calcium hydroxide. Filter it. Sand will be separated from the solution of calcium hydroxide. Pass carbon bi oxide via the solution of the calcium hydroxide to reconvert it into chalk or carbon bi oxide. Filter and dry the powder to get back the chalk powder. Alternately the chalk and sand mixture is vigorously shaken. Chalk will be converted into fine powder. Centrifuge the mixture. The upper part will have chalk powder. Separate it from the sand. Water is added and the procedure is repeated. 'Most' of the chalk powder can be taken out by this method. This is physical method. Sand can be repeatedly washed to discard the small chalk, that remains there. This can be washed away by water. Little chalk is discarded by this method. Heat the suspension to get the chalk back.
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What is chalkdust?
dust from a chalk. Chalk is made from calcium carbonate, CaCO3.
Will chalk and water form a solution?
it is a suspension because; suspension = a solid and a liquid mixing which is what chalk dust and water is. :)
Dust particles in the air is an example of what type of mixture?
There's no set formula for 'dust'. It depends on what kind of dust it is.
Does chalk dust react in water?
not everything will survive all the time. wateris stronger than chalk. now u can understand
Is a white board a more environmentally friendly alternative to a chalk board?
White boards are more environmentally friendly because chalk leads to airborn dust being breathed into the lungs. It also eliminates the need for the manufacturing and shipping of chalk.
How would you separate gold dust from a mixture of iron filings and salt?
Mix with water, the pass through a filter paper. The salt will be dissolved in the water so it will be removed with the water, leaving the iron filings and gold dust on the filter paper. Leave this to dry then separate off the iron filings using a magnet, leaving behind the gold.
How do you separate table salt and chalk dust?
you can filter it
How do you separate a mixture of sand and iron filings and gold dust?
First, place the sulfur, sand and iron filings in a plastic container. Next, use a magnet to remove the iron filings from the sulfur-sand mixture and surely,the iron filings will connect to the magnet, leaving the sulfur and sand behind.
What is a separation technique?
A separation technique is something used to separate an object from it's mixture. For example, in a bowl you have chalk, chalk dust, salt, and paperclips. You'd use magnetic attraction to get the paperclips out. Then you'd use your hands and take out the chalk. And then, you use a sifting tool and it'll separate the salt and chalk dust by itself. But, another cool way to separate those two is to put them in water. The salt will eventually sink because it's denser than water, and the chalk dust will float because it is less dense. Other techniques are, filteration, sifitng, magnetic attraction, evaporation, chromotography. Hope that helped! :D
What is a separating technique?
A separation technique is something used to separate an object from it's mixture. For example, in a bowl you have chalk, chalk dust, salt, and paperclips. You'd use magnetic attraction to get the paperclips out. Then you'd use your hands and take out the chalk. And then, you use a sifting tool and it'll separate the salt and chalk dust by itself. But, another cool way to separate those two is to put them in water. The salt will eventually sink because it's denser than water, and the chalk dust will float because it is less dense. Other techniques are, filteration, sifitng, magnetic attraction, evaporation, chromotography. Hope that helped! :D
Why a magnet is used to separate iron filings from saw dust?
because magnet has a property that can attract metals/metal particles
Which device is used to separate iron dust and sulfur?
magnet is used to seperate iron dust and sulfur dust mixture
How will you separate a mixture of ion dust and sulphur powder?
Use a magnet.
How can you separate a mixture of chalk and sugar?
we can filter the mixture of table salt and chalk dust by using the process called filtration because when you mix the table salt with water and chalk dust together, it becomes an insoluble mixture called suspension
What is chalk dust on the blackboard?
Chalk is a form of calcium carbonate, so chalk dust is also a form of calcium carbonate.
Can a chalk dust be a chalk again?
Maybe :3
What happens to pieces of chalk when they are shaken in jar with pebbles?
The chalk will be ground into chalk dust by the pebbles.
