8.6 C Check #1

What is the term used to describe the attraction between molecules of the same substance? (Two of the SAME molecules sticking together)

• Adhesion

• Cohesion

• Surface tension

• Capillary action

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TEKS.SCI.8.6C

Which of the following best describes adhesion?

• The attraction between molecules of the same substance

• The attraction between molecules of different substances

• The ability of a liquid to resist an external force

• The process of a liquid forming droplets

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TEKS.SCI.8.6C

How does surface tension allow insects to walk on water?

• It decreases the density of water

• It creates a solid surface on the water

• It allows the water to support the weight of the insect

• It increases the water's temperature

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TEKS.SCI.8.6C

Explain how cohesion and adhesion work together to enable the transport of water in plants.

• Adhesion holds on to the xylem, and cohesion pushes the water up.

• Cohesion and adhesion both push water downwards

• Cohesion holds on to the xylem, and adhesion pushes the water up.

• Cohesion and adhesion both push water upwards

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TEKS.SCI.8.6C

Which observable phenomenon is a direct result of water's surface tension?

• Water boiling at 100°C

• Water forming droplets on a leaf

• Water dissolving salt

• Water freezing at 0°C

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TEKS.SCI.8.6C

Describe a scenario where both cohesion and adhesion are necessary for a process to occur.

• Water evaporating from a surface

• Water boiling in a pot

• Water moving through a plant's xylem

• Water freezing into ice

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TEKS.SCI.8.6C

Why is cohesion important for the formation of water droplets?

• It increases the water's temperature

• It allows water molecules to stick together and create a dome shape

• It decreases the water's density

• It allows water to evaporate quickly

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TEKS.SCI.8.6C

Predict what would happen if water did not have cohesive properties.

• Water would not form droplets

• Water would boil at a lower temperature

• Water would freeze at a higher temperature

• Water would dissolve more substances

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TEKS.SCI.8.6C

Which property of water is shown by the image?

• High specific heat
• Density anomaly
• Cohesion
• Adhesion

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TEKS.SCI.8.6C

Which property of water is shown by the image?

• High specific heat
• Density anomaly
• Cohesion
• Adhesion

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TEKS.SCI.8.6C