EduNinjaWhat describes bonding within a water molecule?
Hydrogen bonding due to transfer of electrons
Double bonds due to equal sharing of electrons
Non-polar covalent bonding due to equal sharing of electrons
Polar covalent bonding due to unequal sharing of electrons
Which characteristic of the ringed seal (Pusa hispida) is a consequence of the thermal conductivity of water?
Streamlined body
Sharp teeth
Blubber (layer of fat)
Lungs
Which of the following is a consequence of the adhesive properties of water?
Stable temperatures of aquatic environments
Water movement by capillary action in soil
Transport of dissolved nutrients in blood plasma
Cooling effect of sweating
The photograph shows a pond skater.
Which property of water allows the insect to walk on water?
Adhesion
Capillarity
Surface tension
Transparency
Which symbol indicates the polarity of the oxygen atom in the water molecule?
+
-
Water shows strong cohesive properties. Which of the following can occur because of the cohesive properties of water?
Water can be pulled up a plant through the xylem.
Enzymes can react with their substrates in cells.
Sweating cools the body on a hot day.
Salt can dissolve in sea water.
What are linked by hydrogen bonds?
Hydrogen and oxygen within a water molecule
Phosphate and sugar within a DNA molecule
Base and sugar between DNA nucleotides
Hydrogen and oxygen in different water molecules
Water striders of the Gerridae family of insects have areas of their legs covered with a hydrophobic substance.
What property of water makes it possible for them to walk on its surface?
Adhesion of water molecules
Cohesion of water molecules
High specific heat capacity
High density
What characteristic(s) of water allow(s) effective transport of nutrients around the body by blood?
I. Solvent properties
II. Thermal capacity
III. Transparency
I only
I and II only
II and III only
I, II and III
Water and methane molecules have different thermal properties despite similarities in mass.
Key: carbon oxygen hydrogen
What is a reason water remains in a liquid state over a larger range of temperature than methane?
Water molecules are non-polar.
Water molecules occupy less space.
There are fewer covalent bonds within water molecules.
There are stronger attractions between water molecules.