FSHN 101 Lecture Notes - Lecture 12: Raisin Bran, Phase Diagram, Triple Point

• School: University of Illinois
• Department: Food Science and Human Nutrition
• Course: FSHN 101
• Professor: Bohn Dawn

Document Summary

Lecture 12: water: its role in life and in foods. All living beings require water to survive. Water is one of the most abundant and unique chemicals on earth. All foods contain at least some water. Describe the mobility of the water molecule: vibrate, rotation, move through space (translate) Mobility of water: the water molecule has three types of motions, rotate, vibrate, translate. Solid (ice), liquid (water), vapor (gas), and super cial uid. Solid (ice) > molecules are xed, molecules never stop vibrating, lots of distance. Liquid (water) > no motion, no distance. 0. 0099 temp & 0. 006 pressure > triple point for al 3 gases. 374. 15 temp & 218. 65 pressure > critical point. Thursday, september 22, 2016: melting, freezing, boiling, condensation, sublimation, ablation. If pressure remains contacts while temperature increase it affects molecular mobility. If temperature remains constant while pressure increases line is horizontal. Energy requirements associated with the phase diagram of water.