Prepare for your exam with George

Everything you need to pass your exam, built from your documents

A plan up to exam day, short lessons, corrected exercises, and George to answer your questions.

2. Your notes become a plan

   Add your notes and past papers: George turns them into a revision plan made for you.

   Your plan

   Diagnostic3 min

   The basics10 min

   Key exercises12 min

   Typical exercises12 min

   Exam level15 min

3. A plan up to exam day

   Short sessions, spread out until your exam.

   D-12

   D-11

   D-10

   D-9

   D-8

   D-7

   D-6

   D-5

   D-4

   D-3

   D-2

   D-1

   Exam day

   D-12

   

4. Short lessons

   The essentials of each chapter, explained simply.

   Entropy

   It measures the disorder of an isolated system: the more spread out the particles, the higher the entropy.

   Remember

   It can only increase.

   That is why an ice cube melts in your drink and never the reverse: energy spreads out, disorder grows.

5. Corrected exercises

   Practise and see right away what you got right.

   In an isolated system, entropy…

   decreasesdrops to zeroincreaseschanges sign

   Not quite right

   Well done!

6. George answers your questions

   Stuck on something? Ask him, any time.

   What’s entropy?

   

   A measure of how disordered a system is.

   Got an example?

   

   An ice cube melting: disorder goes up.