Molecular Polarity

What determines the polarity of molecules?

• Size of the molecule

• Geometrical shape of the molecules

• Number of atoms in the molecule

• Color of the molecule

What type of bond is formed when electrons are shared unequally by two atoms?

• Polar covalent bond

• Ionic bond

• Nonpolar covalent bond

• Metallic bond

What is represented by an electric dipole in a molecule?

• One positive end and one negative end

• Two positive ends

• Two negative ends

• No charge

Which atom becomes the partial negative pole in a polar covalent bond?

• The atom with higher electronegativity value

• The atom with lower electronegativity value

• The smallest atom

• The largest atom

• polar

• nonpolar

Which of the following statements about this molecule is true?

• The electrons are shared equally in the bonds of this molecule.

• Hydrogen gained an electron and fluorine lost an electron.

• This molecule is polar.

• Fluorine gained an electron and hydrogen lost an electron.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

• nonpolar

• polar

CH4 is a nonpolar molecule because ...

• It is NOT symmetrical

• It is symmetrical

• It has polar bond between its atoms

• It dissolves in water

Which of the following statements describes a polar molecule?

• because electrons are transferred between atoms, the molecule conducts electricity

• electrons are equally shared between atoms, giving them a negative charge

• the molecule has unequal sharing of electrons, atoms have slightly positive or negative charge

• a polar molecule is perfectly symmetrical, electrons travel freely around atoms

What is the symbol for the partially negative pole in a polar covalent bond?

• δ-

• ẟ+

• δ+

• ẟ-