Question

1. list 5 ways that water helps to maintain homeostasis. 15. what property of water causes surface tension? 16. give an example that you observed of surface tension (think penny lab). 17. define cohesion in your own words. give an example. 18. define adhesion in your own words. give an example.

Explanation:

• Question 16: In the penny - lab, water can be added to the surface of a penny beyond its rim without spilling immediately due to surface tension.
• Question 17: Cohesion is the attraction between molecules of the same substance. An example is water droplets forming on a waxed surface.
• Question 18: Adhesion is the attraction between molecules of different substances. An example is water climbing up the sides of a narrow glass tube (capillary action).

Answer:

1. Water can be added to a penny beyond its rim without immediately spilling.
2. Attraction between like - molecules. Water droplets on a waxed surface.
3. Attraction between different - molecules. Water climbing up a narrow glass tube.