WorksheetsWater and Life
Total questions: 10
Worksheet time: 5mins
What are the four emergent properties of water that are important for life?
cohesion, expansion upon freezing, high heat of evaporation, capillarity
cohesion, moderation of temperature, expansion upon freezing, solvent properties
moderation of temperature, solvent properties, high surface tension, capillarity
heat of vaporization, high specific heat, high surface tension, capillarity
polarity, hydrogen bonding, high specific heat, high surface tension
Water shows high cohesion and surface tension and can absorb large amounts of heat because of large numbers of which type of bonds between water molecules?
strong ionic bonds
nonpolar covalent bonds
polar covalent bonds
hydrogen bonds
weak ionic interactions
Water has an unusually high specific heat. What does this mean?
At its boiling point, water changes from liquid to vapor.
A large amount of heat is required to raise the temperature of water.
Ice floats in liquid water.
Salt water freezes at a lower temperature than pure water.
Floating ice can insulate bodies of water.
If water was treated with molecules that reduce or remove surface tension, which of the following would occur?
Treated water droplets would form a thin film instead of beading on a waxed surface.
Treated water would form smaller droplets when dripping from a sink.
Water striders would sink.
All of the above would occur.
In a glass of old-fashioned lemonade, what is the solvent?
lemon juice
sugar
water
lemonade mixture
ice
In a glass of cola, what is the solute?
the glass
sugar
water
gas bubbles
ice
If you were working with a protein that needed a certain pH to work, what would you need in the solution containing the protein?
salt
acid
buffer
carbon dioxide
If you were a fish in a pond in the winter in Minnesota, for what property of water would you be most grateful?
high heat of fusion
high specific heat
hydrogen bonding
cohesion
adhesion
If you were a spider gliding across a pond in the summer in Virginia, for what property of water would you be most grateful?
high heat of fusion
high specific heat
cohesion
adhesion
You are looking at your dinner plate and see small circles in the aqueous meat juices on your plate. What word best applies to the circles?
cohesive
hydrophobic
solute
pH
None of these apply
