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Water
Water
4.1
Water
Consists of elements such as
hydrogen
and
oxygen
.
Polar molecule.
Properties of water and its importance in a cell:
Properties
Descriptions and its importance
Polarity of water
Inorganic compound consisting of the hydrogen(H) and oxygen(O) elements.
Polar molecules:
shared electrons between oxygen (more electronegative).
Produces hydrogen bonds and allows water to act as a
universal solvent.
Cohesive force and adhesive force of water
Water molecules are attached to each other through a
cohesive force.
Water molecules attached to other surfaces through
adhesive force.
Both forces produce a the capillary action which allows water to enter and move along narrow spaces.Ex: xylem tube.
Specific heat capacity
Water has a high specific heat capacity of 4.2 kJ kg-1 °C-1 .
4.2 kJ of heat energy is required to raise the temperature of one kilogram of water by 1°C.
Water absorbs a lot of heat energy with a small rise of temperature.
Maintain body temperature of organisms.
Chapter : Chemical Composition in a Cell
Topic : Water
Form 4
Biology
View all notes for Biology Form 4
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