SNOW CHEMISTRY
1. Answer the questions:
a. Why do we put salt on the roads?
b. What is the difference between snow and ice?
c. Why can't the student see the crystals?
2. Complete the sentences.
a. Salt , sodium chloride ....................... ....................... ions Na+ and Cl-.
b. Water is shaped like a ....................... .
c. Snow is formed by water ....................... in the clouds.
d. In England snow crystals ....................... ....................... be rather wet.
e. Professor's got an umbrella, which has the ....................... ....................... on it.
3. Decide if this statements are true (T) or false (F).
a. When ions dissolve in water the solution of sodium chloride has a higher freezing point.
b. Calcium chlorate is more effective than sodium chloride.
c. Snow crystals form trigonal shapes.
d. Every snow crystal has a different structure.