This reaction between iron and sulphur forms iron sulphide,... Show more
English Literature
Biology
SociologySign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
166
•
25 Dec 2025
•
Iron + Sulphur = Iron Sulphide: The Reaction and Properties of Ferrous Disulfide
Scarlet
@sscqr
1 / 3
Creating Iron Sulphide: The Chemical Reaction
This page delves into the process of creating iron sulphide and explains the differences between a mixture and a compound.
To create iron sulphide, a mixture of iron filings and sulphur powder must be heated. This heating initiates a chemical reaction:
- The sulphur begins to melt.
- An exothermic reaction occurs, releasing heat energy.
- The particles rearrange and form chemical bonds.
- Iron sulphide (FeS) is formed as a new compound.
Definition: An exothermic reaction is one that releases heat energy to its surroundings.
It's important to note that during this process, sulphur dioxide (SO₂), a poisonous gas, may be released.
The key difference between an iron and sulphur mixture and iron sulphide is that the latter is a chemical compound with bonded elements. Unlike the mixture, iron sulphide cannot be separated back into its original elements using a magnet.
Vocabulary: A chemical compound is a substance formed when two or more elements are chemically bonded together.
The iron and sulphur reaction equation can be written as:
Example: Iron + sulphur = iron sulphide or Fe + S = FeS
Comparing Stages of the Iron and Sulphur Reaction
This page provides a visual comparison of iron and sulphur at different stages: as separate elements, as a mixture, and after reacting to form iron sulphide.
The diagram illustrates that the number of particles remains constant throughout the reaction process. What changes is the arrangement of the atomic bonds between the iron and sulphur atoms.
Highlight: A chemical reaction involves the rearrangement of atomic bonds, not the creation or destruction of atoms.
The stages shown are:
- Iron and sulphur as separate elements
- Iron and sulphur as a mixture
- Iron sulphide (FeS) as a compound
The final stage shows the iron sulphide formula (FeS) and emphasizes the 1:1 ratio of iron to sulphur atoms in the compound.
Example: The iron + sulphur = iron sulphide balanced equation is Fe + S → FeS, showing that one atom of iron combines with one atom of sulphur to form one molecule of iron sulphide.
This visual representation helps to understand the transformation from elements to a mixture, and finally to a chemical compound, highlighting the key differences at each stage.
Iron and Sulphur Reaction: Basics and Properties
This page introduces the fundamental concepts of iron and sulphur as elements and their properties before reacting. It also explains what happens when these elements are mixed at room temperature.
Iron (Fe) and Sulphur (S) are elements found on the Periodic Table. Iron is a metallic element, while sulphur is a non-metallic element. When separate, each substance consists entirely of its own type of atom.
Vocabulary: Elements are pure substances made up of only one type of atom.
The properties of these elements are distinct. Sulphur powder is yellow and powdery, while iron filings are dark grey with a sand-like texture. A key difference is that iron is magnetic, but sulphur is not.
Highlight: Iron's magnetic property is crucial for separating it from sulphur in a mixture.
When iron filings and sulphur powder are mixed at room temperature, they form a mixture without undergoing a chemical reaction. This mixture appears yellowy-gray and can be easily separated using a magnet due to iron's magnetic properties.
Example: A mixture of iron and sulfur particle diagram would show distinct iron and sulphur particles coexisting without chemical bonds.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
Most popular content: Chemical Reaction
Most popular content in Chemistry
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Iron + Sulphur = Iron Sulphide: The Reaction and Properties of Ferrous Disulfide
Scarlet
@sscqr
This reaction between iron and sulphur forms iron sulphide, a compound with distinct properties from its constituent elements. The process involves heating a mixture of iron filings and sulphur powder, resulting in a chemical change that cannot be easily... Show more
Creating Iron Sulphide: The Chemical Reaction
This page delves into the process of creating iron sulphide and explains the differences between a mixture and a compound.
To create iron sulphide, a mixture of iron filings and sulphur powder must be heated. This heating initiates a chemical reaction:
- The sulphur begins to melt.
- An exothermic reaction occurs, releasing heat energy.
- The particles rearrange and form chemical bonds.
- Iron sulphide (FeS) is formed as a new compound.
Definition: An exothermic reaction is one that releases heat energy to its surroundings.
It's important to note that during this process, sulphur dioxide (SO₂), a poisonous gas, may be released.
The key difference between an iron and sulphur mixture and iron sulphide is that the latter is a chemical compound with bonded elements. Unlike the mixture, iron sulphide cannot be separated back into its original elements using a magnet.
Vocabulary: A chemical compound is a substance formed when two or more elements are chemically bonded together.
The iron and sulphur reaction equation can be written as:
Example: Iron + sulphur = iron sulphide or Fe + S = FeS
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Comparing Stages of the Iron and Sulphur Reaction
This page provides a visual comparison of iron and sulphur at different stages: as separate elements, as a mixture, and after reacting to form iron sulphide.
The diagram illustrates that the number of particles remains constant throughout the reaction process. What changes is the arrangement of the atomic bonds between the iron and sulphur atoms.
Highlight: A chemical reaction involves the rearrangement of atomic bonds, not the creation or destruction of atoms.
The stages shown are:
- Iron and sulphur as separate elements
- Iron and sulphur as a mixture
- Iron sulphide (FeS) as a compound
The final stage shows the iron sulphide formula (FeS) and emphasizes the 1:1 ratio of iron to sulphur atoms in the compound.
Example: The iron + sulphur = iron sulphide balanced equation is Fe + S → FeS, showing that one atom of iron combines with one atom of sulphur to form one molecule of iron sulphide.
This visual representation helps to understand the transformation from elements to a mixture, and finally to a chemical compound, highlighting the key differences at each stage.
Sign up to see the contentIt's free!
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
Iron and Sulphur Reaction: Basics and Properties
This page introduces the fundamental concepts of iron and sulphur as elements and their properties before reacting. It also explains what happens when these elements are mixed at room temperature.
Iron (Fe) and Sulphur (S) are elements found on the Periodic Table. Iron is a metallic element, while sulphur is a non-metallic element. When separate, each substance consists entirely of its own type of atom.
Vocabulary: Elements are pure substances made up of only one type of atom.
The properties of these elements are distinct. Sulphur powder is yellow and powdery, while iron filings are dark grey with a sand-like texture. A key difference is that iron is magnetic, but sulphur is not.
Highlight: Iron's magnetic property is crucial for separating it from sulphur in a mixture.
When iron filings and sulphur powder are mixed at room temperature, they form a mixture without undergoing a chemical reaction. This mixture appears yellowy-gray and can be easily separated using a magnet due to iron's magnetic properties.
Example: A mixture of iron and sulfur particle diagram would show distinct iron and sulphur particles coexisting without chemical bonds.
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
30
Smart Tools NEW
Transform this note into: ✓ 50+ Practice Questions ✓ Interactive Flashcards ✓ Full Mock Exam ✓ Essay Outlines
Mock Exam
Quiz
Flashcards
Essay
Similar content
Chemical Reactions of Metals
Explore the essential concepts of metal reactions, including redox processes, corrosion, acid-base interactions, and the properties of metals. This summary covers key topics such as neutralization, single replacement reactions, and the formation of salts, providing a comprehensive overview for chemistry students.
Chemistry9
Electrolysis Fundamentals
Explore the principles of electrolysis, including the roles of electrodes (anode and cathode), electrolytes, and the processes of reduction and oxidation. This summary covers key concepts such as Faraday's laws and the behavior of ions during electrolysis, tailored for Edexcel Chemistry specifications.
Chemistry10
Most popular content: Chemical Reaction
Most popular content in Chemistry
Most popular content
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
App Store
4.8/5
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user