Black ice is a thin layer of water on a sidewalk or road that has rozen after the temperature has dropped below freezing its called black ice because the ice-s nearly ms ble especially when driving in a car at night. which of the following statements is true?
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a) black ice is neither a chemical change nor a physical change
b) black ice is an example of a physical change
c) black ice is an example of a chemical change
d) black ice is both a chemical change and a physical change

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.