Why does a pink color appear, and then disappear quickly, at the point where the NaOH solution comes in contact with the solution in the flask?

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

What characteristics does a earthquake have

An unknown substance has been shown to have weak covalent bonds. which of the following is most likely a property of this substance? a. high ph b. high conductivity c. low melting point d. low flammability