Best Answer: Polar bond = simply a type of covalent bond in which the electrons are shared but not equally. This happens when two different atoms come together, such a C and O. Each atom has a different ability to draw electrons to itself when it shares electrons (that drawing ability is called Electronegativity).onpolar bond = two of the same atoms come together, such as the diatomic molecule N2, or triatomics such as O3, etc. A nonpolar covalent bond could be viewed as having pure covalent character. There is perfectly equal sharing. Source(s): http://iweb.tntech.edu/snorthrup/chem111...
Some people who have chronic obstructive pulmonary disease â such as emphysema â develop a slight barrel chest in the later stages of the disease. It occurs because the lungs are chronically overinflated with air, so the rib cage stays partially expanded all the time.
A heavy chest of heavy feeling in the chest in most cases can be attributed to the same causes as 1  : Dyspnea (difficulty breathing) 2  Cardiac pain (heart pain) 3  Chest wall pain.