Unit 2 Section B Flashcards
What name is given to a rock or mineral that we can recover a metal from
Ore
Which portion of our planet is the major supply house for the production of manufactured goods
Lithosphere or crust
The resources are fairly evenly distributed
False
The more land a country has the greater its supply
False
They are not evenly distributed
True
They are deep within the earth
False
Water, NaCl, Mg+2, S2-, Ca2+ are some of the resources present in which layer of our planet
Hydrosphere
Major layers of our planet
Atmosphere
Hydrosphere
Lithosphere
What term is five to a naturally occurring solid substance commonly removed from ores to obtain a particular element of interest or value
Mineral
Gases like nitrogen, oxygen, neon, and argon are some of the recourses present in which layer of our planet
Atmosphere
Factors to take in count when deciding whether to mine s specific ore over another
- distance from mine to refinery
- % of metal in the ore
- type of mining and processing required
Why is copper the worlds most common metal used for electrical wiring
It’s ductile
Resistant to corrosion
We currently mine ores of copper that contain what % of copper
Less than 1%
In the lab converting copper, copper was heated until w black product was formed. How did the mass of the crucible contents change after heating ?
It increased
Oxygen in the air reacted with the copper to form the compound
A metal is usually obtained from its ore by this process
Reduction
Very reactive metals such as lithium potassium calcium magnesium and aluminum would most likely be obtained by this method
Electrolysis
Reduction is always accompanied by oxidation
True
Reduction involves gaining of electrons
True
Reduction is the process whereby metals rust
False
Reduction of minerals often produces elemental metals
False
People discover how to obtain iron from its ore at a much later date than they discovers how to obtain copper from its ore. What is the principle reason for this delay in discovering iron?
Iron is more reactive than copper and people at the time were not able to reach high enough temperature to separate it
A strip of magnesium is placed into a water solution of Cu+2 ions. What happens?
It reacts.
Electrons move from magnesium to Cu2+
What is the name given to the treatment of metals and their ores by heat, such as in a blast furnace.
Pyrometallurgy
Which element is most likely to be most reactive
Lithium
The fact copper is very ductile lets us make what thing from it
Wiring
What happens in redox action
Oxidation and reduction
Define the term ore
A mixture of compound found each that contain a desired metal within minerals and many compounds are useless to us.
The more reactive metals are ____ to selerate from an ionic compound than the less reactive metals
Harder
A metal reactivity series _____ help you to predict if reactions are likely to occur
Does
A ______ active metal will replace a less active metal from its compound
More
Reduction involves any process in which electrons are ____
Gained
Hydro metallurgy involves the use of _____ to obtain metals from their ores
Water
Obtaining a metal from its mineral requires the addition of _____ and a source of electrons
Energy
Copper resources are ______ distributed throughout the world
Unevenly
Lead ______ replace potassium in KNO3
Will not
Calcium ______ replace silver in AgCl
Will
MgCl2 is _____ to separate into ions than ZnCl2
Harder
CuCl2 is _____ to separate into ions than NaCl
Easier
How would you determine if a reaction will or will not take place
A more reactive metal will replace a less active metal from its compound
Why were copper gold and silver among the first metallic elements discovered
They are both very unreactive so they were discovered in their free state
