Examination
180 minutes
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2. Answer all questions.
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Read All Instructions Carefully and Answer All the
Questions Correctly Good Luck: -
total number of neutrons and protons in an atom; #
protons + # electrons - Answer>> Mass Number
When a solid comes out of a solution, the solid is called
- Answer>> precipitate
The fact that two electrons in the same orbital must
have opposite spins is called the - Answer>> Pauli
exclusion principle
A reaction in which the same element gains and loses
electrons is known as a - Answer>> disproportionation
reaction
The Haber process is used to manufacture - Answer>>
ammonia
The ________ is a point charge model that involves
metal d orbitals and ligands - Answer>> crystal field
model
_____ is a trend that describes ligands from strong field
to weak field. - Answer>> electrochemical series
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,A reduction in atomic radii caused by the 4f electrons
being close to the nucleus is called ______. - Answer>>
lanthanide contraction
A ligand that forms one bond to the metal is called a(n)
_________ - Answer>> unidentate
oxidation states - Answer>> -2 oxygen
-1 group 17
+2 group 2A
+1 group 1A
-1 or +1 Hydrogen
Most nonmetallic elements are found in which block of
the periodic table? - Answer>> p
Ernest Rutherford disproved J.J. Thomson's plum-
pudding model of the atom by showing that... -
Answer>> Positive matter is concentrated in the central
core
Plants use up copious amounts of which alkali metal,
preventing most of it from being washed out to sea? -
Answer>> Potassium
What is the ratio of reactants and products in the
chemical equation?
Which arrangement accurately describes the standard
entropy values at different phases? - Answer>> (s) < (l)
< (g)
What are the most stable isotopes? - Answer>> 2, 8, 20,
50, 82 or 126 protons
What element has been oxidized and what element has
been reduced?
3CuS + 8HNO3 --> 3CuSO4 + 8NO + 4H2O - Answer>> S
= oxidized
N = reduced
How do you convert from moles to grams? - Answer>>
multiply the atomic mass (grams) by the number of
moles
How do you convert from grams to moles? - Answer>>
Divide the total number of grams by the atomic mass
(grams) of 1 mole
measure of the amount of matter - Answer>> Mass
made from atoms of 2+ elements that are chemically
bonded; cannot be separated into simpler substances
by any physical process; can be separated by a
chemical reaction - Answer>> Compound
Definite shape and volume
Doesn't conform to shape of container
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