Advertisements
Advertisements
Question
When water at 0°C freezes to form ice at the same temperature of 0°C, then it :
Options
absorbs some heat
releases some heat
neither absorbs nor releases heat
absorbs exactly 3.34 × 105 J/kg of heat
Solution
releases some heat
At 0°C, water releases some heat to lower the speed of molecules, and when it is cool enough the molecules of water are fixed at one position and they start vibrating. Ultimately, the water molecules convert into ice (solid).
APPEARS IN
RELATED QUESTIONS
Give two reasons to justify water at room temperature is a liquid.
Why does steam cause more severe burns than boiling water ?
Which contains more heat, 1 kg of water at 100° C or 1 kg of steam at 100° C ? Give reason for your answer.
Draw a labelled diagram of the experimental set-up to demonstrate the sublimation of ammonium chloride.
One of the following does not undergo sublimation. This one is :
Define Intermodular space
There are large intermolecular gaps in
Explain the term condensation
Halima picks up a small stone from the ground and puts it in the water in a dish. Does the shape of the stone change?
What will happen if....? And why?
A knife is made of wood.
