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 does electronegativity measure?

• Tendency of an atom to attract electrons to itself

• Size of the atom

• Number of protons in the atom

• Temperature of the atom

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How does electronegativity change within a period?

• Decreases from left to right

• Stays constant

• Increases from left to right

• Randomly changes

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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

What is the electronegativity difference used for in predicting chemical bonds?

• Determining the type of bond between atoms

• Calculating the size of the atoms

• Measuring the temperature of the atoms

• Counting the number of protons in the atoms

What is the connection between electronegativity and the polarity of bonds?

• Electronegativity repels electrons

• Electronegativity has no effect on bond polarity

• Lower electronegativity attracts electrons more strongly

• Higher electronegativity attracts electrons more strongly

Tags

NGSS.HS-PS1-1

What does VSEPR theory help predict?

• Geometrical shape of molecules

• Color of molecules

• Size of molecules

• Temperature of molecules

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

• δ-

• ẟ+

• δ+

• ẟ-