Chapter 6.1
Endothermic, Exothermic, and How Heat Actually Moves
An instant cold pack gets cold with nothing plugged in, and a hand warmer gets hot the same way. Energy did not appear or vanish; it moved between the chemicals and the surroundings, one collision at a time.
in preparation · lesson 25 of 45
By the end
- 01Classify a heating, phase change, dissolving, or reaction as endothermic or exothermic from observations
- 02Draw an energy diagram that shows the direction and size of an energy change
- 03Explain heat transfer as collisions between particles of different average kinetic energy
- 04Explain why thermal contact ends at equal temperatures