Sharing of electrons is possible in which type of chemical bond?
a. ionic
b. metallic
c. covalent
d. nuclear
c
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The separation of charges within a polar molecule is called a(n)
A. polar bond. B. dipole. C. ionic bond. D. strong attraction. E. dipole-dipole.
All of the following statements about nitrogen dioxide are true, except
A) it can lead to increased numbers of acid molecules in the atmosphere. B) it is corrosive. C) it breaks down slowly. D) it is bad for the pulmonary system.
At the 2008 Olympics the Ethiopian runner Kenisa Bekele won 1.00 x 10^4 meter run in 27 minutes, 1.17 seconds. What is this speed in miles per hour? [1 mile = 1.609 km]
A) 1.38 mph B) 2.30 mph C) 12.3 mph D) 13.8 mph
Which of the following is TRUE?
A) People are undernourished mainly because they are not educated about proper nutrition. B) Aquaculture has decreased significantly since 1985. C) More than one in three adults in the United States is obese. D) World grain production has remained stable since 1985. E) World hunger has increased significantly since 1970.