Min was writing about changes in the state of matter for a research paper. Which of these changes might she include as examples of sublimation? Choose the two statements that apply. A. Clothing is hung outside on a day when the temperature is below the freezing point of water. The clothes dry, even though they freeze first.
B. An ice cube melts on the floor, then it evaporates.
C. Bromine is a reddish-brown, liquid element. In a closed container, a reddish-brown gas exists above the surface of the bromine.
D. Dry ice changes directly to carbon dioxide gas.

Compare the valence electron configuration of the nobles gas elements seen here. what statement is correct?

Electromagnets coils of wire paper clips picked up 10 3 15 6 20 9 25 12 ms. owens' class was studying magnets. ms. owens showed her students how to make an electromagnet using a nail, a d-cell battery, and plastic coated wire. the students wrapped the wire around the nail and then attached the ends to the battery. when they were finished, they tested their magnets by investigating how many paperclips their magnets could pick up. they also tested whether they could increase the strength of their electromagnets by using more coils of wire. they recorded the class average of their results in the data table seen here. ms. owens asked her students to graph their data in a line graph. how should the students label the x-axis on their line graph? a) size of battery b) number of paper clips c) number of coils of wire d) strength of electromagnet

What is the work done by the electric force to move a 1 c charge from a to b?