Question

describe polar covalent bonds using water as an example

Answer 1

surprised nobody has attempted this one

anyway, let's break down the phrase "polar covalent" into its components

polar = the electrons are unevenly distributed across the molecule as a whole due to unequal sharing

covalent = sharing of electrons, usu. between nonmetals

using water as an example:

Answer 2

oxygen is what we call a very electronegative element meaning it tends to pull electrons towards it, giving oxygen a negative charge and the hydrogen atoms a positive charge

thus, you have a negatively charged region near the oxygen and positively charged region near the hydrogens, making the entire molecule polar covalent