Polarity Question Preview (ID: 5593)
Unit 6 Polarity Review.
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Which best describes why water is polar?
a) Water is a bent molecule
b) Water has no lone pairs on the central atom
c) Water is a linear molecule
d) Water is covalent
Which best describes a polar bond?
a) Equal pull beween the shared electron(s)
b) Unequal transfer of electrons resulting in a positive and negative ion
c) Unequal pull between the shared electron(s)
d) Equal transfer of electrons resulting in a positive and negative ion
Which molecule has a polar covalent bond?
a) Na - F
b) F - F
c) K - F
d) H - F
If water does not dissolve nail polish, then which statement is true?
a) Water is polar and nail polish is polar
b) Water is non polar and nail polish is non polar
c) Water is polar and nail polish is ionic
d) Water is polar and nail polish is non polar
Which best describes the shape and polarity of CH4 ?
a) Trigonal Pyramidal Non Polar
b) Tetrahedral Nonpolar
c) Tetrahedral Polar
d) Trigonal Pyramidal Polar
Distillation separates two _______ by using different _____________.
a) liquids, boiling points
b) gases, densities
c) solids, particle size
d) liquids, particle size
Does sand (SiO2) dissolve in water?
a) Yes, because ionic dissolves in polar
b) No, beacuse non polar does not dissolve with polar
c) No, because polar does not dissolve with non polar
d) Yes, because polar dissolves with non polar
Which statement is true about Polar Molecules?
a) They are symmetrical
b) They have similar charges on each end.
c) They dissolve with non-polar compounds
d) They dissolve with Ionic compounds
Which molecule contains as nonpolar bond?
a) Nitorgen monoxide (NO)
b) Hygrogen Chloride (HCl)
c) Potassium Iodide (KI)
d) Fluorine gas (F2)
The periodic trend for electronegativity values:
a) Increases going down a group and decreases going across a period
b) Decreases going down a group and increases going across a period
c) Decreases going down a group and decreases going across a period
d) Increases going down a group and increases going across a period
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