AP BIOLOGY

BIOCHEMISTRY

PROPERTIES OF WATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How many hydrogens & oxygen atoms are in a molecule of water?
A
2 Hydrogen & 2 Oxygen
B
2 Helium & 1 Oxygen
C
1 Hydrogen & 2 Oxygen
D
2 Hydrogen & 1 Oxygen
Explanation: 

Detailed explanation-1: -A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom. That’s why water is sometimes referred to as H2O. A single drop of water contains billions of water molecules.

Detailed explanation-2: -If we want to make 2 water molecules, we will need 4 hydrogen atoms and 2 oxygen atoms.

Detailed explanation-3: -Two hydrogen atoms and two oxygen atoms together make hydrogen peroxide, which is less stable than water.

Detailed explanation-4: -The area around the oxygen is somewhat negative compared to the opposite, hydrogen-containing end of the molecule, which is slightly positive. Opposites attract, so this lopsided charge difference allows bonds to form between the hydrogen and oxygen atoms of adjacent H2O molecules.

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