When a strong magnet is brought near to a sample which is known to contain both iron and sulfur the iron and the sulfur are not separated from one another. What type of material is this sample?
A) a compound
B) a homogeneous mixture
C) a heterogeneous mixture
D) There is insufficient information to answer.
A
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Anticlines and synclines are like
A) strike-slip faults because they rub together. B) the stretched places in a piece of taffy when you pull its ends. C) the compression in a tennis ball when it hits a racket. D) wrinkles in a rug when you push the ends of the rug toward one another.
Phytoplankton are primarily classified as what type of organism?
a. heterotroph b. organotroph c. photoheterotroph d. autotroph e. chemoheterotroph
What submarine oceanic features are circled in this image?
A) Seamounts B) Deep-sea fans C) Rift zones D) Faults
Which ion would you expect to find in the sulfate mineral class?
A) SiO24- B) S- C) Cl-, F-, Br- D) CO32- E) SO42-