Which is a condition in which an element substitution could occur?
A) an ion is much larger than the one it will replace
B) an ion has a +4 charge, and it will replace an ion with a +3 charge
C) an ion has an equal charge to the one it will replace
D) an ion is much smaller than the one it ill replace
Answer: C
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How could one test if calcite is the mineral that cements together loose grains of sandstone?
A) If it is extremely strong then it is calcite. B) If it does not react with dilute acid, then it is calcite. C) If it does react with dilute acid, then it is calcite. D) If you lick it and it falls apart, then it is calcite.
In what kind of nighttime cooling are ground-level temperatures colder than temperatures above the ground?
Aside from ocean waves, what other factors influence the nature of present-day shorelines?
What will be an ideal response?
Streams draw their water from a region known as the
A. drainage lake. B. drainage basin. C. drainage aquifer. D. drainage divide.