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Straighterline CHEM101 Final Exam
Straighterline CHEM101 Final Exam
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Straighterline CHEM101 Final Exam- reacting particles must collide
- collisions have proper orientation
- particles must have a strong enough energy to collide - ANSWER-Name three ways
reactions occur?
-1 - ANSWER-Fluorine oxidation #
-1; other +# if combined with a higher element that necessitates it having a different ox.
# - ANSWER-group 7A (other than fluorine) oxidation #
-2 oxygen
-1 group 17
+2 group 2A
+1 group 1A
-1 or +1 Hydrogen - ANSWER-oxidation states
-2; other -# if combined with a higher element that necessitates it having a different ox.
# - ANSWER-O oxidation #
(actual yield / theoretical yield) x 100% - ANSWER-equation for percentage yield
(q)p = ^U + P^V - ANSWER-heat released or absorbed at constant pressure
(q)v = ^U - ANSWER-heat released or absorbed at constant volume formula
(s) < (l) < (g) - ANSWER-Which arrangement accurately describes the standard entropy
values at different phases?
[(n x atomic mass of element) / molecular or formulas mass of compound] x 100% -
ANSWER-% by mass of an element
^H = ^U + P^V - ANSWER-change in enthalpy formula
^U = q - P^V - ANSWER-change in internal energy of a system
^U = q + w
q=heat (+ endothermic, - exothermic)
w=work (+ work done on system, - work done by system) - ANSWER-change in internal
energy formula
+1 - ANSWER-group 1A oxidation #
,+1; -1 if combined with group 1A or 2A metals to form a metal hydride - ANSWER-H
oxidation #
+2 - ANSWER-group aA oxidation #
= charge / charge or mass - ANSWER-mass of an electron
0 - ANSWER-The oxidation number of any element, in its elemental form, is...
12.01 amu - ANSWER-atomic mass of carbon
1s22s22p63s23p5, p-block, main group - ANSWER-
1s22s22p63s23p64s23d104p65s1, s-block, main group - ANSWER-
1s22s22p63s23p64s23d2, d-block, transition metal - ANSWER-
2, 8, 20, 50, 82 or 126 protons - ANSWER-What are the most stable isotopes?
2:1:1:2 - ANSWER-What is the ratio of reactants and products in the chemical
equation?
__NaOH + __H2SO4 --> __Na2SO4 + __H2O
6.022 x 10^23 particles - ANSWER-How many particles/atoms/molecules are in a mole?
A = -logT = -logI/I0 - ANSWER-Absorbance (A) is equal to minus the log of
transmittance.
A = etc - ANSWER-The Beer-Lambert law is used to determine concentration from
absorbance (A), molar absorptivity (e), and path length (b) through the sample.
absolute zero - ANSWER-0 Kelvin
accuracy - ANSWER-how close a measurement is to the true value
acids - ANSWER-produces H+ ions when dissolved in water
actual yield - ANSWER-amount of product actually recovered
adhesion - ANSWER-attractive forces between molecules in a substance and their
container
aliphatic compounds - ANSWER-do not contain benzene rings
alkali metals - ANSWER-Group 1A
, alkali metals - ANSWER-most reactive metals, oxidation state of +1
alkaline earth metals - ANSWER-group 2A
alkaline earth metals - ANSWER-somewhat less reactive than alkali metals, oxidation
state of +2
alkanes - ANSWER-Hydrocarbons that contain only single bonds
allotrope - ANSWER-One of two or more different forms of an element
alloy - ANSWER-a solid mixture of one or more metals, sometimes also containing one
or more nonmetals
alpha rays - ANSWER-Positively charged particles (helium nuclei) deflected AWAY from
the positively charged plate.
amino acid - ANSWER-contains both carboxyl group and amino group
ammonia - ANSWER-The Haber process is used to manufacture
Amount of area exposed for the reaction of a solid - ANSWER-Surface area impacts
rate of reaction how?
Amplitude - ANSWER-the distance from the midpoint to the crest (or trough) of the
wave
anhydrous - ANSWER-compound without water
Anion - ANSWER-negative ion, element ends in -ide
anode - ANSWER-the electrode at which oxidation occurs
aqueous - ANSWER-dissolved in water
Aromatic compounds - ANSWER-contain a benzene ring
Arrhenius acids - ANSWER-ionize in water to give H+ ions
Arrhenius bases - ANSWER-ionize (or dissociate) in water to give OH− ions
atomic mass unit (amu) - ANSWER-one twelfth the mass of a carbon-12 atom
Atomic Number - ANSWER-total number of protons in an atom; also indicates number
of electrons
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