see the figure and ans the question
Answers
1)Camphor undergoes sublimation.It directly from solid to gas.So it leaves no residue.
2)We feel cold when we touch a piece of ice because the ice takes away the latent heat of fusion from our body to melt.
3)Temperature in K=Temperature in C+273
K=-273+273=0 Degrees Celcius
4)The path of light is not visible in a solution as the particles of a true solution are too small to reflect light.
5)When heated, particles overcome intermolecular force of attraction and the solid starts expanding and on cooling the particles once again start coming near and so it contracts
6)Boiling Evaporation
It is a process which takes place at a It is a process that can take place at fixed temperature any temperature
It is a bulk phenomenon where all the It is a surface phenomenon.Only molecules take part in boiling. surface molecules take part.
No cooling is caused in boiling. Evaporation causes cooling.
The speed of boiling remains the It can be slow or fast depending on same but conversion of liquid to gas temperature. becomes fast as temperature increases.
It does not change with change in Rate of evaporation changes by a surface area,speed of wind,humidity change in surface area,humidity, and temperature. speed of wind, and temperature.