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15 Cards in this Set

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  • Back
The alkali metals have a large increase between their first and second ionization energies BECAUSE it takes more energy to remove an electron from a principal energy level since it is closer to the nucleus.
True, True, CE
Metals have higher electronegativity values than nonmetals BECAUSE metals conduct an electric current.
False, True
Water is a polar molecule BECAUSE water has polar covalent bonds.
True, True
Water has a low vapor pressure BECAUSE water molecules form hydrogen bonds with other water molecules.
True, True, CE
C2H5OH is as an Arrhenius base BECAUSE C2H5OH donates its OH- in aqueous solutions.
False, False
The entropy of steam is greater than the entropy of liquid water BECAUSE at 100 C, the average kinetic energy of the steam molecules is greater than the average kinetic energy of the liquid water molecules.
True, False
All atoms of the same element are identical BECAUSE all atoms of the same element have the same number of protons.
False, True
At the same temperature lighter gas molecules have a higher average velocity than heavier gas molecules BECAUSE at the same temperature lighter gas molecules have a higher average kinetic energy than heavier gas molecules.
True, False
CH3Cl is a polar molecule BECAUSE the lewis diagram of polar molecules always has at least one lone pair of electrons.
True, False
Ammonia has trigonal planar molecular geometry BECAUSE ammonia has a central nitrogen atom surrounded by three hydrogen atoms and one unshared electron pair.
False, True
The two products formed by the reaction of NaCl (aq) and AgNO3 (aq) can be seperated by filtration BECAUSE when sodium chloride and silver nitrate react, a precipitate is formed.
True, True, CE
Zinc metal is the reducing agent is the following reaction: Cu2+ (aq) + Zn(s)---> Cu(s) + Zn2+ (aq) BECAUSE the reducing agent causes reduction but is itself oxidized in an oxidation-reduction reaction.
True, True, CE
Calcium oxide is a covalent substance BECAUSE when a metal reacts with a nonmetal, a covalent bond is formed.
False, False
Zinc oxide is a covalent substance BECAUSE all oxides are covalent compounds.
False, False
The Cl- ion is larger than the K+ ion BECAUSE the ionic radii in a series of isoelectronic ions increase as the nuclear charge increases.
True, False