Biology 2022
The most stable arrangement is the one that puts them farthest apart
from each other: a tetrahedron, with the O−H bonds forming two out of
the four “legs”. The lone pairs are slightly more repulsive than the
bond electrons, so the angle between the O−H bonds is slightly less
than the 109° of a perfect tetrahedron, around 104.5°.
Water is classified as a polar molecule because of its polar covalent
bonds and its bent shape
Hydrogen bonds: weak interactions between and hydrogen with a
partial positive charge and a more eletronegative atom, such as
oxygen, nitrogen, and more.
, Concave meniscus happens because the water is more attracted to the
container
Water Sticking to another thing= adhesion
Water sticking to itself= cohesion
Capillary action= adhesion occurring more intensely and defies gravity
Capillary action occurs in our capillaries
This upward motion against gravity, known as capillary action,
depends on the attraction between water molecules and the glass
walls of the tube (adhesion), as well as on interactions between water
molecules (cohesion).
The water molecules are more strongly attracted to the glass than they
are to other water molecules (because glass molecules are even more
polar than water molecules).
The most stable arrangement is the one that puts them farthest apart
from each other: a tetrahedron, with the O−H bonds forming two out of
the four “legs”. The lone pairs are slightly more repulsive than the
bond electrons, so the angle between the O−H bonds is slightly less
than the 109° of a perfect tetrahedron, around 104.5°.
Water is classified as a polar molecule because of its polar covalent
bonds and its bent shape
Hydrogen bonds: weak interactions between and hydrogen with a
partial positive charge and a more eletronegative atom, such as
oxygen, nitrogen, and more.
, Concave meniscus happens because the water is more attracted to the
container
Water Sticking to another thing= adhesion
Water sticking to itself= cohesion
Capillary action= adhesion occurring more intensely and defies gravity
Capillary action occurs in our capillaries
This upward motion against gravity, known as capillary action,
depends on the attraction between water molecules and the glass
walls of the tube (adhesion), as well as on interactions between water
molecules (cohesion).
The water molecules are more strongly attracted to the glass than they
are to other water molecules (because glass molecules are even more
polar than water molecules).
