AP BIOLOGY

BIOCHEMISTRY

PROPERTIES OF WATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
hydrogen and oxygen atoms in water molecules are held together by
A
polar covalent bonds
B
oxygen
C
adhesion
D
solution
Explanation: 

Detailed explanation-1: -In the case of water, hydrogen bonds form between neighboring hydrogen and oxygen atoms of adjacent water molecules. The attraction between individual water molecules creates a bond known as a hydrogen bond.

Detailed explanation-2: -Hydrogen and oxygen atoms are held together by COVALENT bonds. Covalent bonds occur when atoms share their electrons with each other and this creates stability as the valence electrons are balanced. Water (H2O) is a polar covalent bond as the oxygen atom pulls the electrons towards it more than the hydrogen atoms.

Detailed explanation-3: -The two hydrogen atoms and one oxygen atom within water molecules (H2O) form polar covalent bonds.

Detailed explanation-4: -Strong linkages-called covalent bonds-hold together the hydrogen (white) and oxygen (red) atoms of individual H2O molecules. Covalent bonds occur when two atoms-in this case oxygen and hydrogen-share electrons with each other.

Detailed explanation-5: -Water is a Polar Covalent Molecule The unequal sharing of electrons between the atoms and the unsymmetrical shape of the molecule means that a water molecule has two poles-a positive charge on the hydrogen pole (side) and a negative charge on the oxygen pole (side).

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