Why can't the elements of a compound be separated from one another by physical means?
A. Elements found within a compound tend to be inert.
B. Elements tend not to be soluble in water.
C. They are too homogeneous when found within a compound.
D. Their atoms are too tightly bound to one another.
Answer: D
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Which of the following statements about fission is true?
A. The fragments of a fusion reaction are always the same size. B. Bombarding a nucleus with neutrons always leads to fission. C. The amount of energy released in the fusion of small nuclei is very large. D. The amount of energy released in the fission of large nuclei is very large. E. none of the above
When analyzing the economic value of using DDT in the environment, the major criticism that environmentalists routinely cite is that ________ costs have not been fully considered
A) contingent valuation B) hedonic valuation C) external D) internal E) subsistence
Plate tectonics explains past processes that shaped Earth but not present-day processes.
Answer the following statement true (T) or false (F)
Which of the following does not describe the Linnaean biological taxonomy?
A) Formulated in the 1700s B) Hierarchical C) Comprehensive D) Losing acceptance E) Binomial