I have a lab that is due soon that doesn't seem to be working. I finished half of it, but the second half is bothering me. I am suppose to put whole milk into a petri dish and put 4 different colors of food coloring in different spots excluding the center. After, I dip a toothpick into dishwasher detergent and touch the tip of the toothpick into the center of the petri dish. Nothing happened for me. In my first one, the oil moved away and separated when i put in the toothpick. Help~
Answer:
the detergent has emulsifiers. emulsifiers are basically substances with polar and non-polar ends. oil and fat are mostly non-polar, so it will be repelled by the non-polar ends of the emulsifiers.
rule of polarity: like signs repel each other and opposites attract
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers:
Is freezing enthalpically favorable?
Question about energy?
Boiling an egg! Help!!?
What is the role of anhydrous sodium sulfate in experimenting extraction?
How many monochloro and monobromo isomers are there with 3-ethyl-4-methylhexane?
What is the osmotic pressure of a solution containing 25.7 g of sugar (C12H22O11) in one liter of solution at?
How to measure the weight of Hg(NO3)2 to make ppm solution of it when it is in liquid form?
Determine the pH of each of the following solutions:?
If 40.0 grams of H3PO4 reacts with 60.0 grams of MgCO3 according to this reaction...?