Name_________________________________________ Grade & Sec.:_________ Score:_______
Teacher:______________________________________ Date:_________________ Rating:______
Activity 1
Seawater! See Water and Salts!
Objective
In this activity, you should be able to collect distilled water and salts from
seawater.
Materials Needed
seawater alcohol lamp
Erlenmeyer flask (sample flask) tripod
test tube (receiver) safety matches
glass tube bent at right angle, wire gauze (asbestos
with rubber/cork attachment scraped off)
(delivery tube) evaporating dish (or
water bath aluminum foil)
small boiling chips hand lens
spoon
Procedure
1. Prepare a distillation setup as shown in Figure
1. Place about 60 mL of seawater in the
sample flask. Add 2-3 small boiling chips.
2. Apply heat to the sample flask until you have
collected about 15 mL of the distilled water (distillate).
Note: Make sure the source of heat is not removed while the distillation is in
progress.
3. Taste a portion of the distillate. Compare the taste of the distillate with that of
seawater.
Q1. What is the taste of the distillate? Is
the taste the same as seawater?
4. Set the rest of the distillate aside. You will use it in Activity 2. Label it properly.
5. While allowing the remaining seawater to cool, prepare an evaporation setup
as shown in Figure 2.