-The hydrogen bonding in water is a a result of partial negative charge on the oxygen of one molecule which forms a hydrogen bond with the partial positive charge on the hydrogen of other molecules.
-When molecules of water are close to each other, their positive and negative regions are attracted to the oppositely-charged regions of nearby water molecules. This force of attraction is called a hydrogen bond. Each water molecule is hydrogen bonded to four others.
-This important property of hydrogen bond occurs in polar molecules such as water which contains weak, partial negative charge at one region of a molecule and also a partial positive charge elsewhere in the molecule.
Hydrogen bonding occurs between a hydrogenatom and an electronegative atom (e.g., oxygen, fluorine, chlorine). The bond is weaker than an ionic bond or a covalent bond, but stronger thanvan der Waals forces (5 to 30 kJ/mol). A hydrogen bond is classified as a type of weak chemical bond.
A strand of DNA having base sequence as ATG CGA. The complementary strand of DNA will be produced with base sequence as TAC GCT. In the double strand DNA nitrogenous bases paired in a specific manner, A (Adenine)always pair with T (Thymine) with double hydrogen bond or vice-versa and C (Cytosine) pair with G (guanine) with triple hydrogen bond or vice-versa.
Density and solubility are similar because they both involve water, but they are different because density involves dissolving a material and solubility involves floating or sinking a material.
