University:
University of Southern California
Course:
PHYS 161L | Advanced Principles of Physics I
Academic year:

2024
Views:

169

Pages:

2
Author:

Miguel Pope

Name_________________________ Period _____ Number _____ Properties of Water Test Review Worksheet 1. What elements are important to all living things? 2. The hydrogen and oxygen atoms in a water molecule are held together by ______________ bonds. 3. The electrons in a water molecule are not shared equally creating a ___________________ molecule. 4. Hydrogen bonds form between adjacent water molecules because the _________________ charged hydrogen end of one water molecule attracts the ______________________ charged oxygen end of another water molecule. 5. Water molecules stick to other water molecules. This property is called _________________. 6. Water molecules stick to other materials due to its polar nature. This is called ____________. 7. __________________ _______________________ creates the skin-like surface formed due to the polar nature of water. 8. What property of water causes ice to float? _______________________________________ 9. A molecule that has a partial _______________charge on one end and a partial positive charge on the other end is called _____________. 10. Unique properties of water include: ___________ dense as a solid and retains large amounts of heat. 11. The amount of heat needed to raise or lower 1g of a substance 1 degree C is called ____________________. 12. What property of water causes capillary action? ___________________________________ 13. Draw two water molecules and identify the following: a. The molecular formula (how would a chemist write “water”) b. The bonds between 2 water molecules c. The bonds within the water molecule (between hydrogen and oxygen). d. Label the positively and negatively charged portions of the molecule. 14. 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.______________________________ _____________________________________________________________________ _____________________________________________________________________ 19. Write the dissociation equation for water (when water breaks into hydrogen ions and hydroxide ions). 20. Draw a pH scale. a. On the scale, label 1-14. b. Label neutral. c. Label the basic side and identify the direction that is increasingly basic d. Label the acidic side and identify the direction that is increasingly acidic. e. Identify 2 strong acids and put them on the scale in the appropriate place. f. Identify 2 strong bases and put them on the scale in the appropriate place. 21. Describe a buffer using your own words. Why are they important to all living things? _____________________________________________________________________ _____________________________________________________________________