What are two things that happen when a home computer scanner uses electromagnetic waves? A. Red light shines on patterns of black and white, recording the pattern of reflected light
B. A charge-coupled device captures visible light that is reflected off an object.
C. A silicon chip releases electrons by the photoelectric effect, producing an image.
D. Objects are exposed to X-rays, which either pass through or are absorbed by the objects.

answer: when the substance contain the two parts (polar and non-polar) like soap.

explanation:

soap is produced from the basic hydrolysis of ester "saponification", it is considered as a salt of hydrocarbons. the soap molecule contains the two parts: a polar group   (-coo-na+) and a non-polar group (r-hydrocarbon part). the polar group is called the head and the tail is the non-polar group. the polar group is hydrophilic in nature (water loving) and the non-polar group is hydrophobic in nature (water repelling).the polar/non-polar nature of a substance is useful that it can dissolve the non-polar substances by the polar part and also can dissolve the polar substances by the non-polar part. it commonly used in detergents and soaps.