Straighterline CHEM101 Final Exam Latest Update 2023-2024 314 Questions and 100% Verified Correct Answers Guaranteed A+
- reacting particles must collide
- collisions have proper orientation
- particles must have a strong enough energy to collide - Correct Answer: Name three
ways reactions occur?
-1 - Correct Answer: Fluorine oxidation #
-1; other +# if combined with a higher element that necessitates it having a different ox.
# - Correct Answer: group 7A (other than fluorine) oxidation #
-2 oxygen -1 group 17 +2 group 2A +1 group 1A
-1 or +1 Hydrogen - Correct Answer: oxidation states
-2; other -# if combined with a higher element that necessitates it having a different ox.
# - Correct Answer: O oxidation #
(actual yield / theoretical yield) x 100% - Correct Answer: equation for percentage yield
(q)p = ^U + P^V - Correct Answer: heat released or absorbed at constant pressure
(q)v = ^U - Correct Answer: heat released or absorbed at constant volume formula
(s) < (l) < (g) - Correct 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% -
Correct Answer: % by mass of an element
^H = ^U + P^V - Correct Answer: change in enthalpy formula
^U = q - P^V - Correct Answer: change in internal energy of a system
^U = q + w q=heat (+ endothermic, - exothermic) 1 / 3
w=work (+ work done on system, - work done by system) - Correct Answer: change in internal energy formula
+1 - Correct Answer: group 1A oxidation #
+1; -1 if combined with group 1A or 2A metals to form a metal hydride - Correct
Answer: H oxidation #
+2 - Correct Answer: group aA oxidation #
= charge / charge or mass - Correct Answer: mass of an electron
- - Correct Answer: The oxidation number of any element, in its elemental form, is...
1s22s22p63s23p5, p-block, main group - Correct Answer:
1s22s22p63s23p64s23d2, d-block, transition metal - Correct Answer:
1s22s22p63s23p64s23d104p65s1, s-block, main group - Correct Answer:
2, 8, 20, 50, 82 or 126 protons - Correct Answer: What are the most stable isotopes?
2:1:1:2 - Correct Answer: What is the ratio of reactants and products in the chemical equation?
__NaOH + __H2SO4 --> __Na2SO4 + __H2O
6.022 x 10^23 particles - Correct Answer: How many particles/atoms/molecules are in a mole?
12.01 amu - Correct Answer: atomic mass of carbon
A = -logT = -logI/I0 - Correct Answer: Absorbance (A) is equal to minus the log of transmittance.
A = etc - Correct 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 - Correct Answer: 0 Kelvin
accuracy - Correct Answer: how close a measurement is to the true value
acids - Correct Answer: produces H+ ions when dissolved in water
actual yield - Correct Answer: amount of product actually recovered
- / 3
adhesion - Correct Answer: attractive forces between molecules in a substance and their container
aliphatic compounds - Correct Answer: do not contain benzene rings
alkali metals - Correct Answer: Group 1A
alkali metals - Correct Answer: most reactive metals, oxidation state of +1
alkaline earth metals - Correct Answer: group 2A
alkaline earth metals - Correct Answer: somewhat less reactive than alkali metals, oxidation state of +2
alkanes - Correct Answer: Hydrocarbons that contain only single bonds
allotrope - Correct Answer: One of two or more different forms of an element
alloy - Correct Answer: a solid mixture of one or more metals, sometimes also
containing one or more nonmetals
alpha rays - Correct Answer: Positively charged particles (helium nuclei) deflected AWAY from the positively charged plate.
amino acid - Correct Answer: contains both carboxyl group and amino group
ammonia - Correct Answer: The Haber process is used to manufacture
Amount of area exposed for the reaction of a solid - Correct Answer: Surface area impacts rate of reaction how?
Amplitude - Correct Answer: the distance from the midpoint to the crest (or trough) of the wave
anhydrous - Correct Answer: compound without water
Anion - Correct Answer: negative ion, element ends in -ide
anode - Correct Answer: the electrode at which oxidation occurs
aqueous - Correct Answer: dissolved in water
Aromatic compounds - Correct Answer: contain a benzene ring
Arrhenius acids - Correct Answer: ionize in water to give H+ ions
- / 3