Why do trees change color anyway? Scientists say the color change for trees that turn yellow and orange is basically no change at all. The pigments for those colors are always in the leaves, only masked by green chlorophyll used for photosynthesis. The phenomenon is commonly called autumn colours or autumn foliage in British English and fall colors, fall foliage, or simply foliage in American English.
Although the autumn lasts for about two months and trees appear to gradually yellow and get other colors, the process from the first sign of loss of chlorophyll to abscission only takes max one week. The reaction already occurs in solution in an equilibrium , but might be more likely to react in acidic lemonade. Is adding sugar to lemonade a physical or chemical change? Chemistry Matter Physical and Chemical Changes.
Mar 29, Depends how technical you want to get. Generally, it is a physical change. Is fresh lemonade a chemical change? Is souring milk a chemical change? Is souring of milk physical or chemical? Is Melting gold a chemical change? Is dynamite exploding a physical or chemical change? Is banana ripening a chemical change?
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