Separate temperature from total internal energy, bridge that microscopic story into gas pressure and the ideal-gas law, then follow how thermal energy crosses boundaries and shapes honest heating curves on one compact thermal branch.
Use this topic page when you want the thermal story to stay causal instead of formula-first. Temperature and Internal Energy separates average microscopic motion from whole-sample energy, Ideal Gas Law and Kinetic Theory turns that same particle picture into pressure-volume-temperature reasoning, Heat Transfer follows energy across a boundary, and Specific Heat and Phase Change shows what that transferred energy does next inside the sample.
Best first concepts
The topic page keeps these starts in their own compact row so the first screen is about orientation and next action, not stacked feature cards.
Compare average particle motion with whole-sample energy, vary amount and heating, and see why a phase-change shelf breaks naive temperature-only reasoning on one compact thermal bench.
Thermal foundations
Strong first stop for getting into this topic without scanning the whole library.
Connect pressure, volume, temperature, and particle number on one bounded particle box, then read the same pressure changes back as changes in particle speed and wall-collision rate.
Gas-state bridge
Strong first stop for getting into this topic without scanning the whole library.
See heat as energy transfer driven by temperature difference while conduction, convection, and radiation compete on one compact bench with honest pathway rates.
Heat flow
Strong first stop for getting into this topic without scanning the whole library.
See why the same energy pulse changes different materials by different temperature amounts, and why a phase-change shelf can absorb or release energy without changing temperature on one compact thermal bench.
Thermal response
Strong first stop for getting into this topic without scanning the whole library.
Related guided tracks
These tracks stay tied to the same shared concept pages and progress model. They are surfaced here either because the authored path meaningfully overlaps this topic page or because the topic catalog marks the track as useful preparation for this branch.
Start with temperature-versus-internal-energy bookkeeping, reuse that particle story for gas pressure, then follow energy transfer into heating curves and phase-change shelves.
Track progress
0 / 7 moments complete
0 / 4 concepts and 0 / 3 checkpoints cleared.
Temperature and Internal Energy opens this track and sets up the rest of the path.
Grouped concept overview
Each group is authored in the topic catalog, but the actual concepts, progress badges, and track cues still come from the canonical concept metadata and shared progress model.
Group 01
Start with the particle-energy bookkeeping, then reuse that same microscopic picture to explain why gas pressure changes when temperature, volume, or particle number changes.
Compare average particle motion with whole-sample energy, vary amount and heating, and see why a phase-change shelf breaks naive temperature-only reasoning on one compact thermal bench.
Thermal foundations
Strong first stop for getting into this topic without scanning the whole library.
Strong first module for getting into the public preview.
Open conceptConnect pressure, volume, temperature, and particle number on one bounded particle box, then read the same pressure changes back as changes in particle speed and wall-collision rate.
Gas-state bridge
Strong first stop for getting into this topic without scanning the whole library.
Built for quick scanning, filtering, and direct access.
Open conceptGroup 02
Once the particle picture is stable, follow how energy crosses a boundary and how specific heat and latent heat shape the thermal response inside the sample.
See heat as energy transfer driven by temperature difference while conduction, convection, and radiation compete on one compact bench with honest pathway rates.
Heat flow
Strong first stop for getting into this topic without scanning the whole library.
Built for quick scanning, filtering, and direct access.
Open conceptSee why the same energy pulse changes different materials by different temperature amounts, and why a phase-change shelf can absorb or release energy without changing temperature on one compact thermal bench.
Thermal response
Strong first stop for getting into this topic without scanning the whole library.
Built for quick scanning, filtering, and direct access.
Open concept