Name:________________________________ Date: ___________________ Per:____
WATER (H20) WORKSHEET
Directions: Answer the following questions using the Water Notes provided.
1. What is the formula for water? _________________
2. Polar molecules are molecules with a slightly _________________ end and a
slightly _____________________end.
3. The oxygen end of a water molecule has a partial _________________charge
while the hydrogen end has a partial ____________________ charge.
4. The ____________________ sharing of electron causes a water molecule to be
polar.
5. Does the fact water is polar affect the way it acts in solutions, Yes or No?
Explain. ________________________________________________________
_______________________________________________________________
6. What happens when ionic compounds dissolve in water? ____________________
_________________________________________________________________
7. The negative end of water molecules is attracted to the _________________ions
while the positive end of water molecules is attracted to
_____________________ ions.
8.
When sodium chloride (NaCl) dissolves in water, it breaks up into
_____________ ions and ________________ ions.
9. The negative end of water molecules is attracted to ___________________ ions
and the positive end of water molecules is attracted to __________________ ions.
10. Because water molecules are polar, they tend to stick to other polar substances.
This property is called _____________________. This is why water droplets
stick to windows.
11. _______________________ is the tendency of water molecules to stick together.
This happens because the positive end of one water molecule attracts the
_____________________ end of another.
12. ______________________ is the resistance of a liquid to flow.
13. Which is more viscous, water or syrup? __________________
Turn your paper over to answer the rest of the questions
Name:________________________________ Date: ___________________ Per:____
14. Water’s ____________________________ makes water more viscous than it
would be if it were composed of nonpolar molecules.
15. The ___________________nature of water causes ice to float.
16. When water freezes, the molecules spread slightly apart. The ice floats because
ice is ____________________ dense than water.
17. The orderly arrangement, or crystalline structure, of ice keeps the molecules from
doing what?
18. In what direction do lakes freeze? _____________________________________.
19. Why can organisms survive when a lake freezes over?______________________
_________________________________________________________________
20. Only water that contains ____________________________ can conduct
electricity.
21. Substances that can conduct an electric current when they are dissolved in water
are called ________________________________.
22. The ________________________ of ions in a water solution determines how
much electric current the solution can conduct.
23. The higher the concentration of a ions in solution, the __________ current the
solution can carry.
24. _____________________ is very soluble in water, so the concentration of ions in
the solution is high.
25. Lead II Chloride is only slightly soluble in water, so the concentration of ions in
the solution is ___________________.
PLACE YOUR ANSWERS TO THE WATER TAKS QUESTIONS HERE:
1._____
6._____
2._____
7._____
3._____
8._____
4._____
9._____
5._____
10._____