Question

label a diagram of a water molecule: hydrogen atoms, oxygen atom, bond angle, polarity

1. why is water considered a polar molecule?
2. what type of bond holds the hydrogen and oxygen together?
3. how does waters polarity affect its behavior?

Explanation:

1. Oxygen is more electronegative than hydrogen. In a water molecule, the oxygen - hydrogen bonds are polar, and the bent molecular shape results in an overall dipole moment, making water polar.
2. The hydrogen and oxygen in a water molecule are held together by covalent bonds. Each hydrogen shares a pair of electrons with the oxygen.
3. Water's polarity allows it to form hydrogen bonds with other water molecules and polar substances. This leads to properties like high surface tension, high heat capacity, and the ability to dissolve many ionic and polar compounds.

Answer:

1. Oxygen is more electronegative than hydrogen, creating polar O - H bonds and a bent shape gives an overall dipole moment.
2. Covalent bonds.
3. Allows hydrogen - bonding, leading to high surface tension, high heat capacity, and good solvent properties for polar/ionic substances.