A chemical formula is a shorthand way of indicating the number of each type of atom or ion in a compound.
Answer the following statement true (T) or false (F)
True
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The nucleus of an atom consists of one or more _____________________ and in some cases, one or more neutrons.
Fill in the blank(s) with the appropriate word(s).
Evaluate the following statement. "Beaches are often found at headlands."
A) This statement is true. B) This statement is probably true but incomplete; beaches are found on all sorts of shoreline features. C) This statement is probably false; beaches are more often deposited in bays. D) This statement is false; beaches are only deposited on long, straight stretches of coast.
Which of the following materials probably has the highest porosity?
A. poorly sorted sediment B. dry, uncompacted clay particles C. granite with few fractures but very large crystals D. a limestone that has a few percent open cavities
Raising the height of smokestacks to reduce local pollution in industrial areas and around power plants did what to areas away from the source of the pollution relative to acid rain?
A. tended to redirect the problem in the opposite direction B. increased it C. remained the same D. decreased it