AP BIOLOGY

Detailed explanation-1: -A water molecule is represented as H2O, It has one atom of oxygen and two atoms of hydrogen. It contains three atoms in all.

Detailed explanation-2: -Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom.

Detailed explanation-3: -Homonuclear triatomic molecules contain three of the same kind of atom. That molecule will be an allotrope of that element. Ozone, O3 is an example of a triatomic molecule with all atoms the same.

Detailed explanation-4: -Answer: In 3 molecules of (H2O), 9 atoms of oxygen are present.

Detailed explanation-5: -Cohesion: Hydrogen Bonds Make Water Sticky 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.