Question: What are the changes in the temperature of water when heat is gained and lost?
Aim: To study changes in temperature of water when heat is gained and lost.
Apparatus: Retort stand, matches, beaker, tripod stand, thermometer, bunsen burner, wire guaze and
water.
Procedure:
1. Pour water into the beaker, measure the temperature of the water.
2. Heating the water three minutes, record the temperature of the water every one minute.
3. After three minutes, turn off the bunsen burner, record the temperature of the water until the sixth
minute.
4. Record the observation in Table 1.
Observation:
|
Stage
|
Before heating
|
|
During heating
|
|
|
After heating
|
|
|
Time (minutes)
|
0
|
1
|
2
|
3
|
4
|
5
|
6
|
|
Temperature
|
25
|
32
|
38
|
60
|
42
|
38
|
30
|
Table 1
Discussion: What to keep the same in the experiment?
Volume of water used.
Conclusion: Temperature of water increases when heating the water, while temperature of water
decreases when stop heating the water.
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