Question

A glass of mixed fruit juice is initially at a temperature of 20°C, then a few ice cubes are put into the juice. After some time, the ice cubes disappear in the juice. [4]
(i) Explain using scientific reasoning, why the ice cubes disappear in the juice. (ii) What happens to the temperature of the juice?
(iii) Name the effects of heat observed in this example.

Answer 1

Answer:

This is because the molecules in water are more tightly packed than the molecules in the air, allowing more contact with the ice and a greater rate of heat transfer. There's increased active surface area when ice is in a liquid as opposed when it's surrounded by a gas.