SCI 250- Exam 2 || CORRECTLY SOLVED!!
The concentration factor of an ore is a measure of its enrichment in a metal of interest, relative to
average crustal rock. correct answers True
Producing new minerals by refining new ores and mining is more energy efficient than recycling.
correct answers False
Sediment sorting and selective concentration of minerals via currents in a coastal environment
that are mechanically concentrated by water are called:
Hydrothermal deposits.
Ore deposits.
Placer deposits.
Metasomatic deposits. correct answers Placer deposits
Conflict minerals:
-Are those that display two different colors depending on the direction in which they are viewed
-Are those that represent the primary assets of a country that are surrendered to the victor in a
war between nations
-Are those that have a substantially reduced hardness in one crystal direction in comparison to
other crystal directions correct answers -Are those mined in countries as a principal source of
revenue to support warring factions or repressive governments.
Classify each description as metal or non-metallic.
Halite and gypsum- Non-Metallic
Zinc and cobalt- Metals
Promotes chemical reactions- Metals
Table salt- Non-Metallic
Conducts electricity- Metals
Used in synthetic fertilizers- Non-Metallic correct answers Halite and gypsum- Non-Metallic
Zinc and cobalt- Metals
Promotes chemical reactions- Metals
Table salt- Non-Metallic
Conducts electricity- Metals
Used in synthetic fertilizers- Non-Metallic
The concentration factor of an ore is a measure of its enrichment in a metal of interest, relative to
average crustal rock. correct answers True
Producing new minerals by refining new ores and mining is more energy efficient than recycling.
correct answers False
Sediment sorting and selective concentration of minerals via currents in a coastal environment
that are mechanically concentrated by water are called:
Hydrothermal deposits.
Ore deposits.
Placer deposits.
Metasomatic deposits. correct answers Placer deposits
Conflict minerals:
-Are those that display two different colors depending on the direction in which they are viewed
-Are those that represent the primary assets of a country that are surrendered to the victor in a
war between nations
-Are those that have a substantially reduced hardness in one crystal direction in comparison to
other crystal directions correct answers -Are those mined in countries as a principal source of
revenue to support warring factions or repressive governments.
Classify each description as metal or non-metallic.
Halite and gypsum- Non-Metallic
Zinc and cobalt- Metals
Promotes chemical reactions- Metals
Table salt- Non-Metallic
Conducts electricity- Metals
Used in synthetic fertilizers- Non-Metallic correct answers Halite and gypsum- Non-Metallic
Zinc and cobalt- Metals
Promotes chemical reactions- Metals
Table salt- Non-Metallic
Conducts electricity- Metals
Used in synthetic fertilizers- Non-Metallic
