Name Class Date
Boiling Point Lab
Objective: To determine what happens to the properties of liquids as they reach the boiling point.
Hypothesis: Part 1: When heated water reaches the boiling point the temperature will
because
Part 2: When a solute, such as salt, is added to water the boiling point will
because
Materials: (Fill in list of materials used)
Procedure: 1. Follow all SAFETY RULES.
2. Assemble equipment according to the diagram on the board.
3. Fill a large test tube with water sample, insert thermometer and stopper and mark the level of
the liquid.
4. Record the starting temperature of your water sample.
5. Light the burner and record temperature every minute until rapid boiling occurs.
6. Continue to record the temperature for another 5 minutes after boiling starts.
7. Turn off burner.
8. Repeat the procedure for your second water sample containing a solute.
9. Graph your data in a double line graph.
Data:
Time (in minutes) Temperature of Water (in oC) Temperature of Salt Water (in oC)
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
