Preparation of tea. is a Physical or chemical change and reasons??
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Answered by
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Physical change only (as per scientists).
Tea (and tea leaves) contain alkaloids: caffeine, tannins, nicotine, strictine etc.
Tea leaves contain (non ionic) organic substances like these. They are nitrogen based compounds which are slightly acidic or neutral components.
While preparing tea we boil tea with sugar and water. In the process the various chemical substances from the tea power (or leaves) and sugar dissolve in water. Higher temperature dissolves more.
The color and physical shape are changed only. There is no chemical molecular structural change in any of the substances. The basic taste of milk, tea, water and sugar are all mixed.
When lemon is added some change could occur chemically. Otherwise, it is a physical change only.
Tea (and tea leaves) contain alkaloids: caffeine, tannins, nicotine, strictine etc.
Tea leaves contain (non ionic) organic substances like these. They are nitrogen based compounds which are slightly acidic or neutral components.
While preparing tea we boil tea with sugar and water. In the process the various chemical substances from the tea power (or leaves) and sugar dissolve in water. Higher temperature dissolves more.
The color and physical shape are changed only. There is no chemical molecular structural change in any of the substances. The basic taste of milk, tea, water and sugar are all mixed.
When lemon is added some change could occur chemically. Otherwise, it is a physical change only.
Answered by
0
Answer:
Physical change
Explanation:
because, there is no change in the properties of substance like sugar, tea leaves
they remain same
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