Label the items according to the video analysis of two water molecules.
Mmuae Afoforo a Wobɛpaw:
polar covalent bond
positive charge
negative charge
hydrogen bond
Identify the property of water is BEST shown in this video clip. The astronaut draws attention to it at the very end of the clip!
What must be true about human skin if water can stick to it?
Identify the property of water is BEST shown in this video clip. Which property allowed the water droplet to behave in this way?
In the merging droplets video, the astronaut says that our observations are due to the "attracticve forces" between the very large droplets of water (FYI- each droplet is made up of trillions, or maybe even more, molecules of water). What scientific term describes this attraction between water molecules?
Label the items according to the video analysis of two water molecules.
Glass surfaces cause the water to spread out because the adhesive forces are stronger than the cohesive forces.
Why does the waxy surface allow for the water to stick to other water molecules?
Answer: The waxy surface is _________
Why does the water form the shape in the picture below?
Use each answer once. Only 1 item will be used twice (hint: the test tube characteristic).
Mercury is nonpolar
Concave up meniscus
Cohesive forces are stronger
Concave down meniscus
Adhesion is stronger
Glass is polar
H2O is polar
Water Test Tube
Mercury Test Tube
| Draggable item | arrow_right_alt | Corresponding Item |
|---|---|---|
cohesive | arrow_right_alt | occurs between water and glass surface |
adhesion | arrow_right_alt | occurs between water molecules |
Ultimately, why do molecules of water have the ability to attract one another or stick together?
Identify the property of water is BEST shown in this video clip.
Dive deeper, which substance can absorb more heat or energy from a surface and why? Keep in mind, both liquids were tested in identical environments!
Why does water have a higher heat of vaporization?
Identify the property of water is BEST shown in this video clip of sugar dissolving.
What must be true about the molecules of sugar given the events of this video? Recall, on a molecular level, that the water was attracted to the sugar molecules and separated the sugar.
What must be true about the molecules oil given the events of this video?
What do you know when you look at the final location of the oil at the end of the video
Explain why water expanding as it freezes is helpful for life. There is more than one correct answer here!
No credit will be awarded with you do not clearly state how living organisms benefit form this property!
High specific heat is another property of water. This means that it takes a lot of energy for the temperature of water to change. Explain why this property is important for life. There is more than one correct answer here!
No credit will be awarded with you do not clearly state how living organisms benefit form this property!
In this video we see the danger of water being a universal solvent.
A) Explain how water's ability to dissolve substances can be harmful when humans do everyday activities like throw away a plastic bottle (1 pt). Spiral this out and explain how one small act can have a larger an unexpected impact on living organsisms or the biosphere as a whole. (1 pt)
***This isn't meant to make you feel bad, but rather make you aware of the consequences of our daily activities!
Identify the property of water is BEST shown in this video clip when the items "merge".
