This practical guide covers three key chemistry experiments for GCSE... Show more
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Electrolysis GCSE Required Practical
This section focuses on the electrolysis GCSE required practical, explaining the process of separating a salt solution using electricity. The practical aims to demonstrate how different solutions behave when electrolysed.
Vocabulary: Electrolysis is defined as the process of separating a salt solution using electricity.
The guide provides detailed diagrams of the apparatus setup for electrolysis, showing the arrangement of electrodes, power source, and solution. It explains the behavior of ions in both molten compounds and aqueous solutions of less reactive salts.
Highlight: In more reactive metal solutions, such as sodium chloride , hydrogen is produced at the negative electrode instead of the metal, and metal hydroxide is produced in the solution.
The guide outlines potential exam questions, including:
- Testing the gases produced during electrolysis
- Explaining ion behavior at different electrodes
- The effect of adding universal indicator to the solution
Example: Hydrogen gas can be tested by the "pop" sound it makes, while chlorine gas bleaches damp litmus paper.
The section also covers the concepts of oxidation and reduction at the electrodes, providing a comprehensive understanding of the electrolysis process.
Temperature Changes in Solutions
This final section explores temperature changes in exothermic reactions and endothermic reactions. The practical aims to investigate how different variables affect energy changes in solutions.
Definition: An exothermic reaction releases energy , while an endothermic reaction absorbs energy .
The guide focuses on two types of reactions:
- Displacement reactions
- Neutralization reactions
Highlight: Both displacement and neutralization reactions are typically exothermic.
The apparatus setup is described, emphasizing the use of a polystyrene cup for insulation and a thermometer for accurate temperature measurements. The guide explains that the insulation provided by the polystyrene cup reduces the rate of energy transfer to or from the reaction mixture, improving the accuracy of results.
Potential exam questions are listed, covering topics such as:
- The purpose of using a polystyrene cup and lid
- Resolution and accuracy of measurements
- Repeatability, calculating mean results, and uncertainty
Example: Using a polystyrene cup reduces temperature loss to the surroundings, making the results more accurate.
This section provides students with a comprehensive understanding of energy changes in chemical reactions and the practical skills needed to measure and analyze these changes accurately.
Making a Salt from a Carbonate or Oxide
This section covers the process of creating a pure, dry sample of a soluble salt from an insoluble carbonate or oxide. The practical demonstrates the reactions between acids and metal oxides or carbonates to form salts.
Definition: A salt is an ionic substance formed from the reaction between an acid and a base.
The guide explains two main reactions:
- Acid + metal oxide → metal salt + water
- Acid + metal carbonate → metal salt + water + carbon dioxide
Highlight: Different acids produce different types of salts: hydrochloric acid makes metal chlorides, sulfuric acid makes metal sulfates, and nitric acid makes metal nitrates.
The apparatus setup is described for both carbonate and metal oxide reactions, including the use of a thistle funnel, delivery tube, and test tubes. The guide emphasizes the importance of heating the solution to ensure complete reaction and filtering to remove excess reactants.
Example: To show that carbon dioxide is produced in the carbonate reaction, limewater can be used as an indicator.
Potential exam questions are listed, covering topics such as crystallization methods, the purpose of heating and filtering, safety precautions, pH testing, and salt identification.
Can't find what you're looking for? Explore other subjects.
Students love us — and so will you.
4.9/5
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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
How to Make Pure Salt and Learn Cool Chemistry!
This practical guide covers three key chemistry experiments for GCSE students, focusing on how to make a pure dry soluble salt, electrolysis GCSE required practical, and temperature changes in exothermic reactions. The guide provides detailed explanations of... Show more
Electrolysis GCSE Required Practical
This section focuses on the electrolysis GCSE required practical, explaining the process of separating a salt solution using electricity. The practical aims to demonstrate how different solutions behave when electrolysed.
Vocabulary: Electrolysis is defined as the process of separating a salt solution using electricity.
The guide provides detailed diagrams of the apparatus setup for electrolysis, showing the arrangement of electrodes, power source, and solution. It explains the behavior of ions in both molten compounds and aqueous solutions of less reactive salts.
Highlight: In more reactive metal solutions, such as sodium chloride , hydrogen is produced at the negative electrode instead of the metal, and metal hydroxide is produced in the solution.
The guide outlines potential exam questions, including:
- Testing the gases produced during electrolysis
- Explaining ion behavior at different electrodes
- The effect of adding universal indicator to the solution
Example: Hydrogen gas can be tested by the "pop" sound it makes, while chlorine gas bleaches damp litmus paper.
The section also covers the concepts of oxidation and reduction at the electrodes, providing a comprehensive understanding of the electrolysis process.
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
Temperature Changes in Solutions
This final section explores temperature changes in exothermic reactions and endothermic reactions. The practical aims to investigate how different variables affect energy changes in solutions.
Definition: An exothermic reaction releases energy , while an endothermic reaction absorbs energy .
The guide focuses on two types of reactions:
- Displacement reactions
- Neutralization reactions
Highlight: Both displacement and neutralization reactions are typically exothermic.
The apparatus setup is described, emphasizing the use of a polystyrene cup for insulation and a thermometer for accurate temperature measurements. The guide explains that the insulation provided by the polystyrene cup reduces the rate of energy transfer to or from the reaction mixture, improving the accuracy of results.
Potential exam questions are listed, covering topics such as:
- The purpose of using a polystyrene cup and lid
- Resolution and accuracy of measurements
- Repeatability, calculating mean results, and uncertainty
Example: Using a polystyrene cup reduces temperature loss to the surroundings, making the results more accurate.
This section provides students with a comprehensive understanding of energy changes in chemical reactions and the practical skills needed to measure and analyze these changes accurately.
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
Making a Salt from a Carbonate or Oxide
This section covers the process of creating a pure, dry sample of a soluble salt from an insoluble carbonate or oxide. The practical demonstrates the reactions between acids and metal oxides or carbonates to form salts.
Definition: A salt is an ionic substance formed from the reaction between an acid and a base.
The guide explains two main reactions:
- Acid + metal oxide → metal salt + water
- Acid + metal carbonate → metal salt + water + carbon dioxide
Highlight: Different acids produce different types of salts: hydrochloric acid makes metal chlorides, sulfuric acid makes metal sulfates, and nitric acid makes metal nitrates.
The apparatus setup is described for both carbonate and metal oxide reactions, including the use of a thistle funnel, delivery tube, and test tubes. The guide emphasizes the importance of heating the solution to ensure complete reaction and filtering to remove excess reactants.
Example: To show that carbon dioxide is produced in the carbonate reaction, limewater can be used as an indicator.
Potential exam questions are listed, covering topics such as crystallization methods, the purpose of heating and filtering, safety precautions, pH testing, and salt identification.
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