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4 Dec 2022
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Easy Law of Conservation of Mass Explanation with Examples - GCSE & Class 9
Spnd
@spnd
Balancing Chemical Equations
This page focuses on the practical application of the law of conservation of mass in balancing chemical equations, a crucial skill for understanding chemical reactions.
Chemical equations are representations of chemical reactions, starting with word equations and progressing to symbol equations. For example:
Methane + oxygen → Carbon dioxide + water
This word equation is then converted to a symbol equation:
CH₄ + O₂ → CO₂ + H₂O
Highlight: Balancing chemical equations ensures that the law of conservation of mass is obeyed, with equal numbers of each type of atom on both sides of the equation.
Rules for balancing chemical equations:
- Never change subscript numbers in chemical formulas, as this alters the compound's identity.
- Only adjust the coefficients to balance the equation.
Example: For the methane combustion reaction, the balanced equation is: CH₄ + 2O₂ → CO₂ + 2H₂O
This balanced equation shows that one molecule of methane reacts with two molecules of oxygen to produce one molecule of carbon dioxide and two molecules of water.
Tip: When balancing equations, start with the most complex molecule and work your way to the simpler ones.
Understanding how to balance chemical equations is crucial for solving stoichiometry problems and predicting reaction outcomes. It's a fundamental skill that builds upon the law of conservation of mass explanation class 11 and is essential for students preparing for exams or pursuing further studies in chemistry.
Vocabulary: Stoichiometry - the quantitative relationship between reactants and products in chemical reactions.
For students looking to practice, there are many resources available, including balancing chemical equations worksheets and online calculators. However, it's important to develop the skill manually before relying on tools.
Understanding the law of conservation of mass and its application in balancing chemical equations is not only crucial for academic success but also for appreciating the fundamental principles governing the physical world around us.
Law of Conservation of Mass
The law of conservation of mass explanation gcse is a fundamental principle in chemistry that states mass is neither created nor destroyed during chemical reactions. This page explores the concept and its applications in chemical equations.
Definition: The law of conservation of mass states that the total mass of substances involved in a chemical reaction remains constant.
In chemical reactions, atoms are rearranged, but their total number remains the same. This principle is illustrated using the reaction of sodium with chlorine:
2 Na + Cl₂ → 2 NaCl
Example: In the reaction of sodium with chlorine, the mass of reactants equals the mass of the product , totaling 117 g on both sides.
It's important to note that while mass is conserved, it may appear to change in open systems. This apparent change can occur when:
- Mass seems to increase: One of the reactants is a gas
- Mass seems to decrease: One of the products is a gas
Highlight: To accurately observe mass conservation, use a closed system to prevent the escape or entry of gases.
The law of conservation of mass is crucial for balancing chemical equations, which is a fundamental skill in chemistry. Balancing equations ensures that the number of atoms of each element is equal on both sides, reflecting the conservation of mass principle.
Vocabulary: Mr - the sum of the relative atomic masses of all atoms in a molecule.
Understanding the law of conservation of mass is essential for students studying chemistry at various levels, including Class 9, Class 11, and GCSE. It forms the basis for more advanced concepts in chemical reactions and stoichiometry.
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
Easy Law of Conservation of Mass Explanation with Examples - GCSE & Class 9
Spnd
@spnd
The law of conservation of massstates that mass is neither created nor destroyed in chemical reactions, only rearranged. This fundamental principle is crucial for understanding chemical processes and balancing equations. Chemical reactions involve the rearrangement of atoms, resulting in... Show more
Balancing Chemical Equations
This page focuses on the practical application of the law of conservation of mass in balancing chemical equations, a crucial skill for understanding chemical reactions.
Chemical equations are representations of chemical reactions, starting with word equations and progressing to symbol equations. For example:
Methane + oxygen → Carbon dioxide + water
This word equation is then converted to a symbol equation:
CH₄ + O₂ → CO₂ + H₂O
Highlight: Balancing chemical equations ensures that the law of conservation of mass is obeyed, with equal numbers of each type of atom on both sides of the equation.
Rules for balancing chemical equations:
- Never change subscript numbers in chemical formulas, as this alters the compound's identity.
- Only adjust the coefficients to balance the equation.
Example: For the methane combustion reaction, the balanced equation is: CH₄ + 2O₂ → CO₂ + 2H₂O
This balanced equation shows that one molecule of methane reacts with two molecules of oxygen to produce one molecule of carbon dioxide and two molecules of water.
Tip: When balancing equations, start with the most complex molecule and work your way to the simpler ones.
Understanding how to balance chemical equations is crucial for solving stoichiometry problems and predicting reaction outcomes. It's a fundamental skill that builds upon the law of conservation of mass explanation class 11 and is essential for students preparing for exams or pursuing further studies in chemistry.
Vocabulary: Stoichiometry - the quantitative relationship between reactants and products in chemical reactions.
For students looking to practice, there are many resources available, including balancing chemical equations worksheets and online calculators. However, it's important to develop the skill manually before relying on tools.
Understanding the law of conservation of mass and its application in balancing chemical equations is not only crucial for academic success but also for appreciating the fundamental principles governing the physical world around us.
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
Law of Conservation of Mass
The law of conservation of mass explanation gcse is a fundamental principle in chemistry that states mass is neither created nor destroyed during chemical reactions. This page explores the concept and its applications in chemical equations.
Definition: The law of conservation of mass states that the total mass of substances involved in a chemical reaction remains constant.
In chemical reactions, atoms are rearranged, but their total number remains the same. This principle is illustrated using the reaction of sodium with chlorine:
2 Na + Cl₂ → 2 NaCl
Example: In the reaction of sodium with chlorine, the mass of reactants equals the mass of the product , totaling 117 g on both sides.
It's important to note that while mass is conserved, it may appear to change in open systems. This apparent change can occur when:
- Mass seems to increase: One of the reactants is a gas
- Mass seems to decrease: One of the products is a gas
Highlight: To accurately observe mass conservation, use a closed system to prevent the escape or entry of gases.
The law of conservation of mass is crucial for balancing chemical equations, which is a fundamental skill in chemistry. Balancing equations ensures that the number of atoms of each element is equal on both sides, reflecting the conservation of mass principle.
Vocabulary: Mr - the sum of the relative atomic masses of all atoms in a molecule.
Understanding the law of conservation of mass is essential for students studying chemistry at various levels, including Class 9, Class 11, and GCSE. It forms the basis for more advanced concepts in chemical reactions and stoichiometry.
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