1. Table 1 shows the result of heating and discontinued heating of 800 ml of water.
Heating | Discontinued heating | ||||||||
Time (minutes) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
Water Temperature ( °C) | 40 | 50 | 60 | 70 | 80 | 90 | 80 | 70 | 60 |
Table 1
(a) Based on the result given in the table, what is the trend of change in the temperature of the water from the 1st to the 8th minute?
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(b) State an inference based on the trend of change in the water temperature in 1(a).
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(c) Based on the experiment, state what is / are
1. changed___________________________________________________________[1mark]
2. measured__________________________________________________________[1mark]
(d) If the heating of the water is discontinued, predict the time it will take for the water to return to the temperature of 40 °C.
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