Most gases become less soluble as the temperature is raised.
The lower solubility of gases in warm water is responsible for the tiny bubbles that appear when cool water from the faucet is left to stand in a warm room. An ion tail is composed of ionized molecules swept directly away from the Sun by the solar wind. The chlorophyll molecules break down, with the resulting components delivered to the plant s vascular system. Botanists believe that plants salvage and reuse nitrogen, a building-block of protein, from the chlorophyll molecule. Other pigments, lacking nitrogen, remain in the leaves, notes Dr. John Hendrix, CSU Bioagricultural Sciences.