A base is a chemical that
A. accepts a hydroxide ion
B. can be used to clean drains
C. has a bitter taste
D. donates a hydroxide ion
E. accepts a hydrogen ion
Answer: E
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Almost two-thirds of the world's tropical rain forests are found in which area on the map below?
A) A
B) B
C) C
D) D
Shields are the exposed portions of cratons that contain igneous and metamorphic rocks
a. True b. False
How is magma generated along subduction zones?
A) Decompression melting of the mantle from weight reduction. B) Fluids are dehydrated out of the descending plate, which lowers the melting point of the surrounding mantle. C) Friction from colliding plates melts mantle material. D) Radioactive decay melts mantle material.
When air is heated it expands and ________
A) explodes B) contracts C) sinks D) lowers its pressure E) burns