Chemistry Flashcards
1. From Science Bowl
Which of the following scientists was awarded the Nobel Prize in
1911 for the discovery of the radioactive elements, radium and polonium?
w) John Dalton
x) Dmitri Mendeleev
y) Emil Fischer
z) Marie Curie
z) Marie Curie
Who was awarded a Nobel Prize in 1911 for the discovery of the
radioactive elements, radium and polonium?
Marie Curie
Which of the following pairs of German scientists discovered the
atomic fission of uranium and set the stage for the nuclear age?
w) Hahn and Strassman
x) Nernst and Planck
y) Ostwald and Heisenberg
z) Bohr and Rutherford
w) Hahn and Strassman
Name the person who developed a table of elements which revealed
regularities in elemental properties in 1869?
w) Theodore Richards
x) Antoine Lavoisier
y) Dmitri Mendeleev
z) Svante Arrhenius
y) Dmitri Mendeleev
Who was the first American chemist to receive a Nobel Prize? He
was selected in 1914 for his precise determination of atomic weights.
w) Edward Frankland
x) Theodore Richards
y) John Bardeen
z) Paul Dirac
Theodore Richards
What is the maximum number of electrons that can occupy an s
orbital?
2
Which of the following is a necessary characteristic for electrons that
share an s orbital?
w) coplanar spins
x) parallel spins
y) opposite spins
z) none of these
y) opposite spins
Which of the following terms refers to the number of molecules or
ions attached to a central metallic atom?
w) coordination number
x) connection number
y) bonding number
z) none of these
w) coordination number
Which of the following pairs do NOT show similar chemical
properties?
w) fluorine-argon
x) beryllium-aluminum
y) boron-silicon
z) lithium-magnesium
w) fluorine-argon
What is the common name for calcium oxide, CaO?
Quicklime (Lime)
Which of the following terms refers to a material which slows
neutrons?
w) retarder
x) moderator
y) buffer
z) bottleneck
Moderator
Which of the following refers to the scattering of light by colloidal
particles?
w) Rutherford effect
x) Tyndall effect
y) Thompson effect
z) none of these
x) Tyndall effect
Who is accredited in the history of modern chemistry of proving that
neutrons existed?
James Chadwick
Which of the following refers to an easily melted product of the
reaction between the flux and the impurities of an ore?
w) slag
x) slurry
y) slug
z) none of the above
w) slag
Name the thermodynamic state function that is a measure of
randomness.
Entropy
What term is used to describe silver which contains 7.5% copper?
Sterling
Name the state function that represents the heat content of a system.
Enthalpy
Which of the following is NOT a physical property of crystalline
boron?
w) brown color
x) diamond hardness
y) brittleness
z) high electrical resistance
w) brown color
Which noble gas has the highest melting point ?
w) argon
x) krypton
y) xenon
z) radon
z) radon
The noble gases have low boiling points because:
w) their ionization potentials are very low
x) only weak Van der Waals forces hold the atoms together
y) they are produced by the fractional distillation of liquid air
z) they have eight electrons in the outer shell
ONLY WEAK VAN DER WAALS FORCES HOLD THE ATOMS
TOGETHER
For which of the following classes of salts are all of its compounds
soluble in water?
w) sulfates
x) nitrates
y) hydroxides
z) chlorides
NITRATES
Which of the following is NOT a general property of hydroxide
bases in aqueous solution?
w) High solubility
x) Bitter taste
y) Ability to neutralize aqueous acid solutions
z) Ability to change phenolphthalein from colorless to red
W – HIGH SOLUBILITY (The hydroxides of the alkali metals are
soluble in water but all the other metal hydroxides are only moderately or sparingly soluble.)
Aqua regia is:
w) concentrated nitric acid
x) a mixture of three parts of concentrated hydrochloric acid and one part concentrated
nitric acid
y) concentrated hydrochloric acid
z) a mixture of sulfuric acid and hydrochloric acid
x) a mixture of three parts of concentrated hydrochloric acid and one part concentrated
nitric acid
A solution with a pH of 12 is:
w) weakly acidic
x) strongly acidic
y) weakly basic
z) strongly basic
z) strongly basic
What is the common name given to a mixture of three parts of
concentrated hydrochloric acid and one part concentrated nitric acid?
Aqua Regia
The halogen with the largest atomic radius is:
w) Cl
x) I
y) Br
z) At
z) At
Which halogen has the largest atomic radius:
Astatine
Compounds of iodine are NOT used for which of the following?
w) as a refrigerant
x) in photographic film
y) as an essential part of diet
z) as an antiseptic
w) as a refrigerant
Allotropic modifications of phosphorus include each of the
following EXCEPT:
w) red phosphorus
x) black phosphorus
y) white phosphorus
z) green phosphorus
z) green phosphorus
How many milligrams are in one metric carat?
200 Milligrams
What class of organic compounds is characterized by an -OH group
bonded to an alkyl group?
Alcohol
Which of the following contain sp2 hybridized carbon atoms?
w) alkanes
x) alkenes
y) alkynes
z) cycloalkanes
x) alkenes
Which of the following phrases is NOT appropriate for a
description of benzene?
w) characteristic reactivity of an alkene
x) volatile liquid
y) aromatic hydrocarbon
z) resonance hybridization
w) characteristic reactivity of an alkene
Which of the following is NOT an aromatic hydrocarbon?
w) naphthalene
x) hexane
y) styrene
z) xylene
x) hexane
Which of the following is NOT an aliphatic hydrocarbon?
w) n-octane
x) propylene
y) n-tridecane
z) benzene
z) benzene
Which of the following is NOT a means of preparing carbon
dioxide?
w) burning coke in the absence of air
x) combustion of methane
y) heating certain normal carbonates
z) action of acids on carbonates
w) burning coke in the absence of air
After carbon, hydrogen, and oxygen, the next most abundant element
in proteins is:
Nitrogen
One of the following is NOT a lipid. Is it:
w) fats and oils
x) starches
y) steroids
z) waxes
Starches
