Watercolor painting demonstrations, advice, and gallery. Painting the sky and clouds with watercolor. Painting the sky and clouds. After doing the drawing our first watercolor painting step is painting the sky and clouds. Create a very weak mixture of French Ultramarine and Burnt Sienna, about the strength of a weak cup of tea.
In chemistry, polarity is a separation of electric charge leading to a molecule or its chemical groups having an electric dipole or multipole moment. Polar molecules must contain polar bonds due to a difference in electronegativity between the bonded atoms. A polar molecule with two or more polar bonds must have an asymmetric geometry so that the bond dipoles do not cancel each other.
The bond is then said to be polar. The term polar molecule can mean two things: (1) simply that there are polar bonds present in the molecule, (2) that the molecular structural arrangement of bonds and electron lone pairs gives rise to a permanent molecualr dipole moment.eport Abuse. A polar molecule has a difference in electronegativity between atoms across the entire molecule. The differently charged atoms are called dipoles. A commonly used example is water, H2O. The oxygen molecule has a high electronegativity compared to the hydrogen molecules, so it exhibits a negative dipole.