1. Salt Water/ Fresh Water
Experiment
Block 2 Group 6
Sarah, Evan, Blake

2. Question
Does salt water heat up to 50˚c
faster than fresh water?

3. Hypothesis
If salt is added to water then it
will take less time to reach 50˚c
as opposed to fresh water

4. Testing Procedure
Variables:
Materials:
Independent Variable: Salt/Fresh Water
1. 100 ml of fresh water
2. 100 ml of salt water
Dependent Variable: Time taken to heat up
3. Bunsen Burner
to 50˚c
4. Ruler
5. Glass Beaker Controlled Variables: Amount of Water,
6. Plastic Beaker Flame Height, Beaker Height From Flame,
7. Graduated Cylinder Same Equipment
8. Eye Dropper
9. Computer with Vernier
10. Temperature Probe
11. Timer/Stopwatch
12. Paper towels

5. Testing Procedure
1. Measure out 100ml of fresh water.
2. Pour 100 ml of fresh water into beaker.
3. Set beaker with fresh water on ring stand 10 inches up from the table.
4. Set up Vernier so that a probe is recording the temperature of the water
inside of the beaker.
5. Light Bunsen Burner and set Bunsen Burner flame height to 4 inches.
6. Bring out a time measuring device.
7. Move Bunsen Burner so that it is underneath ring stand.
8. Once the Bunsen Burner is underneath the ring stand start recording the
time.
9. Carefully watch the time and temperature.
10. Once the temperature probe reads 50˚c stop the timer immediately and
record the time.
11. Repeat process 4 times, once completed replace fresh water with salt
water and do the experiment 4 more times with the salt water.

6. Data
Trial Salt Water Fresh Water
1 11:28:04 11:13:23
2 12:46:60 9:02:42
3 11:07:99 8:44:35
4 9:36:65 10:20:49
Average Time 11:04:25 10:09:75
Range 3:09:95 3:08:88
Maximum 12:46:60 11:13:23
Minimum 9:36:65 8:44:35
Minutes: Seconds: Milliseconds

7. Data
Salt Water
Trial 4
Trial 3
Trial 2
Trial 1
Fresh Water
0 5 10 15
Time

8. Analysis/Conclusion
We found that in our experiment Fresh Water
heated up faster than Salt Water.
We would have to revise our hypothesis to say If salt
is added to water then it will take longer to reach
50˚c than fresh water.
Possible errors that could have occurred during our
experiment are; inconsistent flame
height, inaccurate timing, and inaccurate
temperature readings.