sounds like you called me lol ...probably leaving the revision for this a day before too, as it's my only one on Thursday and the other two are on Wednesday
This is exactly what I always thought. Then today, I found out it was completely wrong! Entropy has nothing to do with order / disorder. To quote from the Royal Society of Chemistry: *"When the concept of entropy is being introduced, it is important that misconceptions should be avoided, particularly the idea that entropy represents the degree of disorder in the system." "Another important feature of entropy is that it is dynamic - although the amount of energy and amount of substance in an isolated system is constant - the energy is constantly being exchanged between different energy levels as a result of the collisions between molecules. This is in direct contrast to the common analogy used to describe entropy - ie the chaos of a teenager's room is often quoted as a system with high entropy, but the socks under the bed never exchange energy with the shirt hanging on the bed-post."* I'm not casting blame, but even you used this bad analogy. At this point, I'm really confused. You see, I had "explained" to a friend that black holes were the least entropic thing in the universe - the most highly ordered, the longest lasting, the least changing. Then, I come to find out that black holes are one of the most entropic things in the universe! As one fellow put it: *"Because of the singularity of a black hole and the intense gravity, there is an extremely high amount of energy concentrated in one area. This means that, within the system, there is an extremely low amount of usable energy and therefore high entropy."* OK then, so entropy is inversely related to the amount of work a system is able to perform via thermodynamic change. I can wrap my head around that, and I was, or at least I was trying to, but then I started reading all sorts of other things about entropy. The one the confounded me the most, was that entropy is synonymous with information: *"Entropy is simply that portion of the (classical) physical information contained in a system of interest (whether it is an entire physical system, or just a subsystem delineated by a set of possible messages) whose identity (as opposed to amount) is unknown (from the point of view of a particular knower)."* < Man, I'm getting really confused. I sure thought I understood what entropy was until this morning, my knowledge had remained unchanged for 35 years, I haven't been this befuddled in a dog's age.
This is a simple introduction to entropy. Disorder and the messy room are simple analogies and good starting places. Entropy really needs to be defined in terms of "states" of the system. Analogies help to get your head around the topic, but can often be misleading.
The biggest change in entropy is the disorder in an IB student's room the day before Paper 3...
After they left all the studying til the night before
I can relate to this so much rn hahahaha paper 3 is tommorow
sounds like you called me lol ...probably leaving the revision for this a day before too, as it's my only one on Thursday and the other two are on Wednesday
Good luck tmr y'all 💀
Imma need it
Thank you
Thank you for your videos!!!!
Great work
20:45 ... if only IB questions were that easy ... 😂
Some are and many people miss them because they don't believe they would ask such an easy question.
This is exactly what I always thought. Then today, I found out it was completely wrong! Entropy has nothing to do with order / disorder. To quote from the Royal Society of Chemistry: *"When the concept of entropy is being introduced, it is important that misconceptions should be avoided, particularly the idea that entropy represents the degree of disorder in the system." "Another important feature of entropy is that it is dynamic - although the amount of energy and amount of substance in an isolated system is constant - the energy is constantly being exchanged between different energy levels as a result of the collisions between molecules. This is in direct contrast to the common analogy used to describe entropy - ie the chaos of a teenager's room is often quoted as a system with high entropy, but the socks under the bed never exchange energy with the shirt hanging on the bed-post."*
I'm not casting blame, but even you used this bad analogy. At this point, I'm really confused. You see, I had "explained" to a friend that black holes were the least entropic thing in the universe - the most highly ordered, the longest lasting, the least changing. Then, I come to find out that black holes are one of the most entropic things in the universe! As one fellow put it: *"Because of the singularity of a black hole and the intense gravity, there is an extremely high amount of energy concentrated in one area. This means that, within the system, there is an extremely low amount of usable energy and therefore high entropy."*
OK then, so entropy is inversely related to the amount of work a system is able to perform via thermodynamic change. I can wrap my head around that, and I was, or at least I was trying to, but then I started reading all sorts of other things about entropy. The one the confounded me the most, was that entropy is synonymous with information: *"Entropy is simply that portion of the (classical) physical information contained in a system of interest (whether it is an entire physical system, or just a subsystem delineated by a set of possible messages) whose identity (as opposed to amount) is unknown (from the point of view of a particular knower)."* < Man, I'm getting really confused. I sure thought I understood what entropy was until this morning, my knowledge had remained unchanged for 35 years, I haven't been this befuddled in a dog's age.
This is a simple introduction to entropy. Disorder and the messy room are simple analogies and good starting places. Entropy really needs to be defined in terms of "states" of the system. Analogies help to get your head around the topic, but can often be misleading.