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It depends on how much food coloring you are trying to absorb, and how big the celery is. If you have a small stick of celery and a lot of food coloring, it will most likely take about a week or so for the celery to completely absorb the food coloring. When the color of the water and the color of the celery switch places, it is fully absorbed. I will be doing this experiment myself to see how long in days, minutes, and seconds it takes, but if you have any more questions, try it!
Food coloring doesn't expire so you can keep it on the shelf FOREVER :D
not very long
well foods are absorb by the long intestine and that's how food is absorb :)
Yes as long as its not crunchy cause the peanuts wont be good with food coloring
Physical, the water is still water and the food coloring is still food coloring you just mixed them together in one space. If you waited long enough the food coloring and water would settle back out so you had just water and food coloring.
overnight.
Yes it can, however, it shouldn't last long.
it only takes about 1 day
"how long is piece of string?" depending on the color, because there is so many different types of food coloring there is an assortments of different ways which they are made some food coloring is made of chemicals and some is made of organic substances even bugs.due to the question being so open/indirect, there 10's of different answers on the ways of which food coloring is made, green food coloring is often derived from seaweed, colors in jelly's are often chemical and hence commercially produced in a big factory.
Because it takes time to absorb food.
If you are talking about bread,probably a week or so.