Which of the following reactions involves the addition of different groups to the two ends of a double bond?
A) hydrogenation
B) hydrobromination
C) both a and b
D) neither a nor b
B
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A computer monitor looked at from a distance appears as a smooth continuous flow of images. Up close, however, we see this is an illusion. What really exists are a series of tiny pixels. This is similar to a chemist's view of matter in that
A. on the submicroscopic level, chemists find that matter is made of extremely small particles, such as atoms and molecules. B. elements are made up of only three basic types of matter. C. anything that a chemist can see, touch, hear, smell, or taste is an illusion. D. the fundamental particles of matter can also be seen when looked at closely with a magnifying glass.
Which of the following is a characteristic of west coast subtropical deserts?
A) exceptionally sunny and cloud-free conditions B) wintertime snowfall C) some of the highest temperatures recorded anywhere in the world D) cool temperatures with low clouds and fog
A coastal circulation cell includes ________.
A. rip currents B. longshore transport C. onshore transport D. All of these are correct. E. None of these is correct.
How is a pothole formed?
A. Through deposition of sand on the inside curve of a meander B. By the saltation of individual sand grains on a muddy stream bed C. Because of the chemical weathering of rocky banks by acidic river water D. Through the swirling, scouring action of pebbles on a hard stream bed E. Through erosion of a muddy bank on the outside curve of a meander