nonpolar covalent bond. (physical chemistry). A bond in which a pair of electrons is distributed or shared equally between two atoms. 1  Facebook.2  Twitter.onpolar covalent bond. (physical chemistry). A bond in which a pair of electrons is distributed or shared equally between two atoms. 1  Facebook.
When is a barrel chest a sign of a disease process? Chronic obstructive pulmonary disease (COPD) is the most common instance in which a barrel chest will occur. In these cases, itâs a sign of the lungs being over-expanded. This is caused by the loss of elasticity and results in the person having hyper-inflated lungs.
It is caused by elevated estrogen levels that contribute to swelling of the mucous membranes in the nose, and lead to you making more mucus. Additionally the amount of blood circulating in your body increases during pregnancy, whack can cause swelling of the blood vessels in the lining of your nose and congestion.