Many students are already familiar with the myriad of natural processes discussed in a Chemistry course. But because of acquired “fear and loathing” due to either pre-conceived notions or bad experiences in the subject (or Science in general), a student may either fail miserably or won’t even bother to register for the course to begin with.
NEWSFLASH! Chemistry is not the problem. One only has to begin by linking “new technical terms” to the “every day processes” that we so often take for granted.
Case in point…
Have you ever wondered why an ice cube slowly goes from a solid to a liquid; and if given enough time, disappears from the kitchen counter altogether at room temperature?
It’s common knowledge about ice melting and water evaporating, right? But, how do these phase changes occur?
Latent Heat & Phase Changes of Water
Here is my latest video demonstration which strives to reveal the mechanics behind Latent Heat (ΔH) and its direct role in the phase changes of water.
Video:
N. B.: As this is an introductory demonstration, latent ΔHvap and ΔHfus terms are not included, but implied!
C. Mei-Ling HAMILTON - Environmental Geochemistry Issues 