Exploring Chlorine
Purpose: To observe the element chlorine and its reaction to other compounds.
Materials: Girls, tie your hair back.
Iron chloride – out of this one
Calcium chloride
Sodium Chloride
Copper (II) chloride
Ammonia
Metric ruler
Plastic beaker for water
hand lens
aluminum foil – tear off small piece
water
small spoon, glass beakers for chemicals
goggles
Chem tray
IMPORTANT: Do not taste or smell any of the chemicals. Be careful not to get the iron
chloride on your clothes.
Procedure:
Part I:
1. Place half a spoonful of the calcium chloride in Cup A of the Chem tray.
2. Place half a spoonful of the sodium chloride in Cup B of the Chem tray.
3. Place half a spoonful of the copper chloride in Cup C of the Chem tray.
4. Observe each with the hand lens and write your observations in the appearance
column in the data table.
Part II:
1. Add 20 drops of water to each Cup A of the Chem Tray.
2. Feel the bottom of the tray cup and record any change in the data table. If there
is no change, indicate that in the data table.
3. Repeat these steps for Cup B and Cup C of the Chem tray.
Part III:
1. Tear a piece of aluminum foil approximately 1 cm by 1 cm square and drop it into
Cup A of the Chem tray.
2. Record your observations in the data table.
3. Repeat these steps for Cup B and Cup C.
Part IV:
1. Wash out Cups A,B,C of the Chem Tray. Please do this at the teacher clean-up sink.
Make sure there is no chemical left in the Cups. They do not have to be dry.
2. Place half a spoonful of the calcium chloride in Cup A of the Chem tray.
3. Place half a spoonful of the sodium chloride in Cup B of the Chem tray.
4. Place half a spoonful of the copper chloride in Cup C of the Chem tray.
5. Add 20 drops of water to each Cup.
6. Add 5 drops of ammonia to each Cup. Record your observations in the data table.