GLGY 308 - Final Review Exam (2025) QUESTIONS
AND ALL CORRECT ANSWERS 100% SOLVED AND
GUARANTEED SUCCESS!!
What are some of the jobs available at the US Borax mine? - answer--Chemists, Geologists,
Electrician
List four conflict minerals and their uses in your cell phone - answer--W - Tungsten (vibrate)
Ta - Tantalum (store electricity)
Au - Gold (coats wires)
Sn - Tin (solders circuit board)
Name a metal with antibacterial properties - answer--Copper
Which country currently controls the world's supply of rare earth materials - answer--China
What is a conflict mineral and describe the situation in the Democratic Republic of the Congo -
answer--A mineral mined in an area of armed conflict and traded illicitly to finance the war
Explain the oxidation of pyrite - answer--4 moles of pyrite reacts with oxygen and water to
release 16 moles of H+
What rock type does pyrite commonly occur in? - answer--In shales that may be interbedded
with coal seams
Describe the action of microbes on the oxidation of pyrite - answer--It catalyzes the oxidation of
FeS2 to ferric ions and hydrogen ions
, Describe several methods of preventing acid mine drainage - answer--Add a buffer material,
limit the area of exposed rock, covering the rock with sealing layers
Explain the role of cyanide in gold extraction and processing - answer--Cyanide helps extract the
gold from the other metals, and leach it into the surrounding water
Describe the effects of the cyanide spill at Baia Mare, Romania - answer--The polluted waters
reached Tisza and killed large number sof fish
Microbes increase the rate of oxidation by _____x - answer--1,000,000x
Thiobacillus ferroxidans are colorless, rod shaped, aerobic air borne bacteria that convert ___ to
___ - answer--Insoluble metals to their soluble states
Thiobacillus ferroxidans is highly _____ (ph 1.5 - 2.0) that obtains its energy through the
oxidation of iron - answer--Acidophilic
The pH scale is logarithmic. This means that a small change in pH represents a _____ change in
H+ concentration - answer--Large
Solutions that resist changes to pH are called ____. These act like sponges to absorb excess H+ -
answer--Buffers
Fluids in living organisms and sea water have strong buffering capacity. What type of water does
not? - answer--Rain water
Where are acidic soils commonly found? Alkaline soils? - answer--Acidic = Rainforests, jungles
Alkaline = Deserts
AND ALL CORRECT ANSWERS 100% SOLVED AND
GUARANTEED SUCCESS!!
What are some of the jobs available at the US Borax mine? - answer--Chemists, Geologists,
Electrician
List four conflict minerals and their uses in your cell phone - answer--W - Tungsten (vibrate)
Ta - Tantalum (store electricity)
Au - Gold (coats wires)
Sn - Tin (solders circuit board)
Name a metal with antibacterial properties - answer--Copper
Which country currently controls the world's supply of rare earth materials - answer--China
What is a conflict mineral and describe the situation in the Democratic Republic of the Congo -
answer--A mineral mined in an area of armed conflict and traded illicitly to finance the war
Explain the oxidation of pyrite - answer--4 moles of pyrite reacts with oxygen and water to
release 16 moles of H+
What rock type does pyrite commonly occur in? - answer--In shales that may be interbedded
with coal seams
Describe the action of microbes on the oxidation of pyrite - answer--It catalyzes the oxidation of
FeS2 to ferric ions and hydrogen ions
, Describe several methods of preventing acid mine drainage - answer--Add a buffer material,
limit the area of exposed rock, covering the rock with sealing layers
Explain the role of cyanide in gold extraction and processing - answer--Cyanide helps extract the
gold from the other metals, and leach it into the surrounding water
Describe the effects of the cyanide spill at Baia Mare, Romania - answer--The polluted waters
reached Tisza and killed large number sof fish
Microbes increase the rate of oxidation by _____x - answer--1,000,000x
Thiobacillus ferroxidans are colorless, rod shaped, aerobic air borne bacteria that convert ___ to
___ - answer--Insoluble metals to their soluble states
Thiobacillus ferroxidans is highly _____ (ph 1.5 - 2.0) that obtains its energy through the
oxidation of iron - answer--Acidophilic
The pH scale is logarithmic. This means that a small change in pH represents a _____ change in
H+ concentration - answer--Large
Solutions that resist changes to pH are called ____. These act like sponges to absorb excess H+ -
answer--Buffers
Fluids in living organisms and sea water have strong buffering capacity. What type of water does
not? - answer--Rain water
Where are acidic soils commonly found? Alkaline soils? - answer--Acidic = Rainforests, jungles
Alkaline = Deserts
