Investigaion on the cooling of 500 ml of water.

Table shows the result of an investigation on the cooling of 500 ml of water.

1) What is the purpose of the investiagation?
To investiagate the relationship between the time of hot water left to cool and the rate of decreasing temperature.

2) Suggest one reason why the water cools.
.....Heat is released to the air.

3) Predict the water temperature at the 9th minute.
.....60 degrees centigrade

4) What conclusion can be made from the investigation?
.....When hot water is left to cool, the temperature of the water will decrease and remains constant.