A plough or plow (US; both / p l aÊ /) is a tool or farm implement used in farming for initial cultivation of soil in preparation for sowing seed or planting to loosen or turn the soil. Ploughs were traditionally drawn by working animals such as horses or cattle, but in modern times are drawn by tractors.
Nonpolar molecule. Definition. noun, plural: nonpolar molecules. A molecule with nonpolar bonds or with polar bonds but arranged symmetrically. Supplement. Polar bonds may occur in both polar and nonpolar molecules.However, the polar bonds in nonpolar molecules are arranged symmetrically causing dipoles to cancel out each other. As a result, nonpolar molecules have no net dipole.efinition. noun, plural: nonpolar molecules. A molecule with nonpolar bonds or with polar bonds but arranged symmetrically. Supplement. Polar bonds may occur in both polar and nonpolar molecules.
Examples of nonpolar molecules include: 1  any of the noble gasses: He, Ne, Ar, Kr, Xe (These are atoms, not technically molecules.) 2  any of the homonuclear diatomic elements: H2, N2, O2, Cl2 (These are truly nonpolar molecules.) 3  carbon dioxide - CO2. 4  benzene - C6H6. 5  carbon tetrachloride - CCl4. 6  methane - CH4. 7  ethylene - C2H4.