Chemistry Unit 1 Semester Flashcards
What name is the given to rock or minerals that we can recover a metal from?
Ore
Water, NaCL,Mg2,S2,Ca2 are some of the resources present in which layer of our planet?
Hydrosphere
What term is given to the 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 resources present in which layer of our planet?
Atmosphere
We currently mind ores of copper that contains what % of copper?
Less than 1%
In the “steel wool lab” steel wool was heated for approximately 2 minutes. How did the mass of the steel wool contents change after heating?
Increase
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.
Electro license
People discovered how to obtain iron from its ore at much later date than they discovered how to obtain copper from its ore.
Iron is more reactive than copper,people didn’t know have technology to have high enough temp.
A strip of magnesium is places into a water solution of Cu2 ions. What happens
It reacts electrons more form Mg-Cu2
What name is given to treatments of metals and their ores by heat,such as in a blast furnace.
Procnetallurogy
The fact that copper is quite ductile lets us make what thing from it
Wire
What happens in a redox reaction
Both oxidation and reduction occur together
Define ore
Mixture of compounds formed on earth that contains desired and undesired materials
The more reactive metals are (easie/harder) to separate from an ionic compound than the less reactive metals
Harder
A metal reactivity series (does/does not) help you to predict if reaction are likely to occur.
Does
A (more/less) active metal will replace a (more/less) active metal from its compound.
Less
More
Reduction involves any process in which electrons are (gained/lost)
Gained
(Oxidation/reduction) involves any process in which electrons are gained.
Reduction
Hydro Metallurgy involves the use of ______ to obtain metals from their ores,
Water
Obtaining a metal from its minerals requires the addition of ___ and a source of electron
Energy
Copper resources are (evenly,unevenly) disturbed throughout the world.
Unevenly
Lead (will/will not) replace potassium.
Will not
Calcium (will,will not) replace silver in AgCl.
Will
MgCl2 is (easier, harder) to separate into ions than ZnCl2
Harder
CuCl2 is (easier/harder) to separate into ions than NaCL
Easier
Using the activity series how do you determine if reaction will it not take place
A more reactive metal will replace a less reactive metal from its compound
Why were copper, gold and silver among the first metallic elements discovered.
They are both very un reactive so they were discovered in their free state.
Which portion of our planet is the major “supply house” for the production of goods manufactured goods?
Lithosphere
