Unit 2: A-B Test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Redox Reactions | Oxidation and Reduction
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| Oxidation | -Lose electrons
-Originally, meant the combination of an element
with oxygen to form an oxide
Ex. Mg : →Mg2+ + 2e-
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| Reduction | -Gain electrons
-Ex. : S : : + 2e- → : : S : : 2-
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| Reducing Agents | -opposite of the reducing
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| Oxidizing Agent | -opposite of reducing
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| Electrometallurgy | Electric current supplies electrons
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| Pyrometallurgy | Treating with thermal energy (heat) to provide electrons
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| Hydrometallurgy | Using water with chemicals to gain electrons
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| Five nonmetals that are gas at RT | Hydrogen, Oxygen, Nitrogen, Fluorine, Chlorine
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| Two liquid elements | Bromine, Mercury
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| protons | subatomic particle with a charge of +1
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| Electrons | subatomic particle with a charge of
-1
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| Neutrons | subatomic particles with no charge
number of neutrons determines the isotope
of the element
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| Isotopes | Isotopes are different types of atoms of the same element that have a different number of neutrons
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| Atomic Number | • Always the number of protons the element has
• Uniquely identifies the element
• Always a whole number
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| Mass Number | • Number of Protons and Neutrons (found
in nucleus)…always a whole number.
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| Atomic Mass (amu) | Mass of protons, electrons, and
neutrons
AVERAGED
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| metals | • Lose electrons more
easily that Non-Metals
• Have higher melting
points than non-metals
• Are shiny (lustrous)
• React with acids…many
also react to copper (II)
chloride
• Conduct electricity and
heat
• Malleable/ductile
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| non metals | • Gain electrons easily
(anions)
• Dull and brittle
• Poor conductors of
heat and electricity
• Lower melting points
than metals---also
lower densities
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| metalloids | • Physically and
chemically between
metals and non-metals
• Boron (B), Silicon (Si),
Germanium (Ge),
Arsenic (As), Antimony
(Sb), Tellurium (Te),
Polonium (Po)
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| Atmosphere | •Layer of gases held by the earth’s gravity
•75% of the atmosphere is within 6.8 miles of
the earth’s surface
•78% is nitrogen (N2), 21% is oxygen (O2), 0.9%
argon (Ar), and the rest, trace gasses
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| Hydrosphere | The combined mass of water on, under
and over the surface of the earth
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| Lithosphere | The Crust and
Upper Mantle
Provides
greatest
variety of
chemical
resources
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| Mineral | • Naturally occurring solid chemical substance
formed through geological processes
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| Ore | • Naturally occurring mineral or rock (an
aggregate of minerals) with important
elements such as metals
• Is mined to extract a metal or other
material
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| Decisions about mining at a specific site | • Quantity of ore at the
site
• % of metal in the ore
• Type of mining
needed to extract the
metal from ore
• Distance of refining
• Supply vs demand
• Environmental impact
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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