properties of water

Maya notices that when she dips a paper towel into a glass of water, the water climbs up the towel against gravity. Capillary action is the result of adhesion. Which aspect of water is responsible for this?

• Nonpolar covalent bonds that enable water to dissolve other substances
  

• Polar covalent bonds that join molecules of water to other substances

• Hydrogen bonds between water and another substance

• Ionic bonds that enable electrons to flow through water and into another substance

Match the following properties of water with their corresponding effects in nature.

• Allows nutrients and minerals to dissolve and be transported in living organisms.

• Water moderates temperature.

• Enables water to move from the roots to the leaves of plants.

• Water expands as it freezes.

• Enables ice to float on water bodies, protecting aquatic life in winter.

• Water exhibits cohesive behavior.

• Helps maintain stable temperatures in organisms and environments.

• Water is an excellent solvent.

Emma notices that the temperature of a large lake near her home does not change quickly, even when the weather gets hotter or colder. Why does the temperature of the lake remain relatively stable?

• Water is a solvent.

• Water has a high heat capacity.

• Water acts as a buffer.

• Water is non-polar.

Tags

NGSS.HS-ESS2-5

NGSS.HS-PS3-4

Harper is watching water striders walk across the surface of a calm pond. She notices that their feet push the surface of the water down slightly, but they do not break the surface. Why?

• The insects are light enough so 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 insect’s 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
  

Tags

NGSS.MS-PS2-5

After a rainy morning, Samuel notices that water droplets are sticking to a spider web in his garden. What word describes when water is attracted to other substances?

• cohesion

• adhesion

• capillary action

• surface tension

Match the following mechanisms with their descriptions related to water movement in plants.

• Downward movement of water in soil

• Water is pushed by solutes

• Movement of water through xylem due to adhesion and cohesion

• Capillary action pulls the water molecules like a chain

• Osmotic pressure in roots

• Water is pulled by gravity

• Cohesion-tension theory in leaves

• Water’s cohesion causes it to “pull” towards the leaves

Match the following terms with their correct definitions related to the properties of water and other liquids.

• The movement of liquid within narrow spaces without the assistance of external forces, often seen in plants.

• cohesion

• The attraction between molecules of the same substance, such as water molecules sticking together.

• surface tension

• The attraction between different kinds of molecules, such as water and glass.

• adhesion

• The elastic-like force existing on the surface of a liquid, making it acquire the least surface area possible.

• capillary action

Jackson is curious about why the temperature on Earth does not change drastically between day and night. He learns that a certain property of water helps to moderate earth's temperature. This property is (a)   .

• adhesion

• chohesion

• Specific heat capacity

• Latent heat of vaporization

Tags

NGSS.HS-ESS2-5

Scarlett is learning about water in her science class. She wonders why water can have no net charge but still have slight charges in different parts of the molecule. What is the reason for this?

• The oxygen end is slightly negative and the hydrogen end is slightly positive

• The hydrogen end is slightly negative and the oxygen end is slightly positive

• The hydrogen and oxygen ends change in polarity

• Because it is hydrophobic

Tags

NGSS.MS-PS1-1

After a rain, Ava notices that water droplets on a leaf tend to stick together and form round beads rather than spreading out. What is the tendency of molecules of the same kind to stick to one another called?

• cohesion

• adhesion

• solution

• polar molecule

Tags

NGSS.MS-ESS2-4