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If you just mix iron and sulphur together, you're still left with a pile of iron and sulphur that are distinctly separate and could be easily separated by throwing the mixture in water (iron sinks, sulphur powder floats). If they were to react together, to become iron sulphide, then they would be chemically bound to each other as a compound and wouldn't be able to be separated by physical means.
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When a mixture of iron and sulfur are heateda compound called iron sulphide is producedwhat type of change is this?
It is a chemical reaction
Describe how to separate a mixture of iron and sulfur?
Iron powder is attracted by a magnet (so it can be 'drawn' away),Sulfur is dissolved in carbon disulfide (so it can be filtered through, leaving iron behind),But be careful: it is explosive, toxic and stinks (rotten cauliflower)
Is unheated sulfur and iron filings is substance or mixture?
Sulfur and iron filings together are a mixture.
Is iron filings and powdered sulfur a homogeneous mixture?
No, the mixture of powdered sulfur and iron filling are not a homogenous mixture, they are a heterogenous mixture.
Is sulfur dioxide a mixture?
No. Sulfur dioxide is a compound, which makes it a pure substance, not a mixture.
What mineral is made by sulfur and iron and is also a mixture?
Pyrite is made of iron and sulfur and is the compound iron sulfide with the chemical formula FeS2. It is not a mixture of iron and sulfur. The iron and sulfur are chemically combined to form a compound.
How is iron sulphide a compound and not just a mixture of iron and sulfur?
Because in a chemical compound is a chemical bond between the elements. From a mixture of iron and sulfur iron can be separated with a magnet.
Describe why iron filings and sulfur can be classified as element compound or mixture?
Because in a chemical compound is a chemical bond between the elements. From a mixture of iron and sulfur iron can be separated with a magnet.
Do substances in a mixture of iron and sulfur keep its own compound or mixture?
They keep their own properties.
Why is it easier to separate a mixture of iron and sulfur than to separate a compound of iron and sulfur?
because a mixture is physically combine while a compound is chemically combine thus make is eaiser for the mixture to separate using the technique magnetic separation.
How do you know iron sulphide is not a mixture?
Because in a chemical compound is a chemical bond between the elements. From a mixture of iron and sulfur iron can be separated with a magnet.
Is iron sulphide a compound mixture or element?
It is a compound because iron and sulfur are two individual elements that you can find on the periodic table.
Why can iron sulphide be classified as an element compound or a mixture?
Because in a chemical compound is a chemical bond between the elements. From a mixture of iron and sulfur iron can be separated with a magnet.
When a mixture of iron and sulfur are heated how would you classify the resulting material?
It depends on the temperature. If you only heat moderately, you will still have a mixture of iron and sulfur, even if the sulfur has melted and formed a kind of cement with the iron. If you put the mixture in a vacuum, and then heat up to the combustion temperature of the mixture, then you would get some amount of iron sulfide, which is a compound. You need the vacuum so that the sulfur, for instance, does not react with oxygen and just burn down to sulfur dioxide gas, probably leaving the iron mostly unaffected. If you have the exact ratio of iron to sulfur for reaction, you will get only iron sulfide compound, but any other ratio will leave either some iron or some sulfur unreacted.
When a mixture of iron and sulfur are heateda compound called iron sulphide is producedwhat type of change is this?
It is a chemical reaction
Is sulfur and iron an element or a compound or a mixture?
sulfur and iron are elements, sulfur a yellow powder and iron a metal. When mixed together at room temperature they do not react readily and constitute a mixture which can be separated say by using a magnet to attract the iron. Heat them up and a vigorous reaction ensues forming a chemical compound, black iron sulfide, Fe2S3 see link for experimental details
Is mixing iron filing and sulfur is a physical change?
It's just physical, unless you heat the mixture. The simple combination of iron and sulfur is a physical mixture: It can be separated with a magnet, and the iron and sulfur are still themselves. The situation changes if you heat the mixture hot enough to start a reaction between the sulfur and iron. If you do so, assuming the ingredients are in the right proportions, you'll have iron sulfide (a compound) and no free iron or sulfur will remain. In that case, you have a chemical reaction.
