Which of the following is not the name of a chemical family?
A) heavy metals
B) transition metals
C) alkali metals
D) alkaline-earth metals
E) noble gases
A
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Genocide is the:
A) mass killing of a group of people in an attempt to eliminate the entire group B) process by which a state breaks down through conflicts among its ethnicities C) favoring of one nationality over another in the hiring of government workers D) forced labor of one ethnic group by another E) forced expulsion and migration of one nationality by another
Historically, frontiers rather than boundaries separated many states
Indicate whether the statement is true or false.
Certain clay minerals tend to expand when they get wet. Indicate whether the statement is true or false
Earth receives energy from the Sun in this way
A) convection B) conduction C) radiation D) all of these