If there is something that is making you think you may be dilated tell your doctor you would like to be checked. I had an appointment last Friday and I have been having a little bit of pressure and told my doctor and he told me just to let them know if I would like to be checked and it would be no problem.
A water molecule is polar because there is an uneven distribution of electrons between the oxygen and hydrogen atoms. Why are water molecules polar? With 8 protons in its nucleus, and oxygen atom has a much stronger attraction for electrons than does the hydrogen atom with a single proton in its nucleus. Then there is a greater probability of finding the shared electrons near the oxygen atom than near the hydrogen atom.
A...is held together by covalent bonds. water molecule: An example of a molecule held together by covalent bonds is ... . water: What does it mean to say a water molecule is âpolarâ? Draw a diagram of water to show the answer: Polar molecules have a positive region â in water it is the two hydrogen atoms. If the atoms in a water molecule are held together by covalent bonds, what type of bond holds multiple molecules together? Hydrogen bonds: How are hydrogen bonds and cohesion related? Hydrogen bonds keep water molecules packed tightly together. Cohesion is when two molecules of the same substance are attracted to each other and they stick together. What causes surface tension? Cohesion â the attraction of water molecules to each other. What is the opposite of cohesion?