How does molecular shape affect polarity?
o
a. if the molecule is symmetric, the effects of polarity will cancel out.
o
b. if the molecule contains more than two bonds, shape will not
affect polarity.
o
c. if the molecule contains atoms of similar size, polarity will cancel
out.
o
d. if the molecule contains nonpolar bonds, a bent shape will make it
polar.

 Think of each polar bond in a molecule as a little arrow pointing from positive to negative. So, the geometry of the molecule determines the direction that the bond dipole vectors point. The polarity of the molecule results from adding up all these individual bond dipoles.

every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.