WorksheetsProperties of Water
Total questions: 16
Worksheet time: 12mins
Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enables it to move from the roots to the leaves of plants?
Water expands as it freezes.
Water is an excellent solvent.
Water exhibits cohesive behavior.
Water is able to moderate temperature.
Large bodies of water, such as lakes and oceans, do not quickly fluctuate in temperature. What is the reason for this phenomenon?
Water is an acid.
Water is a versatile solvent.
Water has a high heat capacity.
Water acts as a buffer.
Why does ice stay at the top of oceans instead of sinking to the bottom?
Ice is colder than liquid water.
Ice is less dense than liquid water.
Ice is more dense than liquid water.
Ice is warmer than liquid water.
Water is often called the "universal solvent" because many substances can be dissolved in water. What property of water allows it to be such a versatile solvent?
purity
polarity and cohesion
high heat capacity
expansion upon freezing
Water has a much higher specific heat than most other covalent compounds. What do you predict might happen if water had a low specific heat instead?
Flooding would occur and animals would be forced to migrate
Harmful organisms living in water would reproduce at a rapid rate
Organisms that are sensitive to changes in temperature would die
Plants would not have enough water to effectively carry out photosynthesis
Small insects can walk across the surface of calm water. Their feet push the surface of the water down slightly, somewhat like a person walking across a trampoline, but they do not break the surface. What is the best explanation for why this happens?
The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together
The insects actually use their wings to hover slightly above the water's surface and they only skim it with their feet
The insects' feet are non-polar, so they are repelled by the polar water molecules and are pushed away from the water's surface
The insects are small enough to see the individual water molecules, so they are able to step carefully from one molecule to the next
A florist places a bouquet of white carnations in water containing blue dye. After a time, the flowers turn blue. What process helped the carnations to change color?
Specific heat
Surface tension
Cohesion and adhesion of water molecules
Formation of covalent bonds between hydrogen and oxygen molecule
Maria, after finding no cold sodas in the refrigerator, placed a can of soda in the freezer. She then proceeded to check her social networking site and forgot about the soda. Later that evening her brother went to get some ice and it was brown. Maria’s soda can had split open. What is the best explanation for what happened?
As the water cooled, it adhered to the can, causing it to split
When the water froze, the space between hydrogen molecules expanded
When the water froze, it weakened the molecular bonds in the aluminum can
As the water cooled, the surface tension of the water decreased and the can collapsed
Water is essential for life. Its special properties make water the single most important molecule in plant life. Which of the following properties of water enable it to move from the roots to the leaves of plants?
Water expands as it freezes
Water is an excellent solvent
Water exhibits cohesive behavior.
Water is able to moderate temperature.
Many fish and aquatic plants can survive a cold winter because the layer of ice that forms at the top of the lake insulates the water below and prevents the lake from freezing solid. What unique property of water contributes to this effect?
Water absorbs heat when it evaporates and forms a gas
Water expands and becomes less dense when it freezes.
Water molecules completely separate into ions in solutions.
Water forms hydrogen bonds with ions and other polar substances.
Water makes up approximately 60% of the human body and plays a vital role in regulating body temperature. Which property of water makes it good at regulating temperature?
Water is a good solvent.
Water exhibits strong cohesion.
Water has an unusual crystalline structure.
Water has a high capacity for heat.
Water has the property of having a high specific heat. This trait has a great influence on maintaining homeostasis within the body. Which of the following accurately explains what it means to have a high specific heat?
Water efficiently absorbs and retains heat.
Less heat is needed to keep water at a high temperature
Water maintains a constant temperature.
Heat is quickly released from water.
If you have ever dissolved salt in hot water, you have witnessed the effectiveness water has as a solvent. Which of the following best explains how salt dissolves?
Polarity of water pull apart the salt molecule.
Cohesive properties of water attract the salt.
Water's ability to retain heat keeps the salt moving.
Hot water melts the salt.
When water dissolves a substance, weak charges on water molecules attract oppositely charged portions of the substance,
pulling them out into solution. Which property of water accounts for this occurrence?
polarity
pH
cohesion
surface tension
The model shows water molecules interacting. The red circles represent oxygen, the white circles represent hydrogen. Which conclusion is supported by this model? Choose the correct answer.
Hydrogen atoms in water molecules are only attracted to other hydrogen atoms.
Oxygen atoms in water molecules are attracted to both oxygen atoms and hydrogen atoms.
Oxygen atoms in water molecules are also attracted to hydrogen atoms in other water molecules.
Hydrogen atoms in water molecules are only attracted to an oxygen atom in the same water molecule.
Ice fishermen drill holes in ice covered lakes so they can fish in the cold winter months. The
water beneath the layer of ice remains liquid. If the ice sank to the bottom, the lake would
freeze from the bottom to the surface. This would freeze all of the lake’s organism. Which
property of water explains this occurrence?
The hydrogen bonds of water expand during the freezing process, creating more volume and decreasing density of the ice.
The bonds, between the water atoms, break expanding the ice molecules so that liquid water can fill the spaces in between the frozen water molecules.
The water’s cohesive properties keeps the molecules close together, therefore, increasing the density ice.
A lower pH makes the water more acidic, resulting in the neutral ice floating.
