Question

25g ice crystals are taken in a beaker, and a thermometer is inserted into it and slowly heated. Answer the following questions based on the above experiment.

a) At what temperature does ice start melting?

b) At 50 °C is reached, what is the physical state of ice?

c) At 100 °C is reached, the boiling point of a substance is not rising for some time. What is the reason for it?

d) What is the boiling point of the substance?

e) What is the physical state of the substance above 100 °C?

a) 0 °C

b) Solid

c) Phase change (boiling)

d) Varies (depends on substance)

e) Gas

Answer 1

The ice starts melting at 0 °C. At 50 °C, ice is still a solid. At 100 °C, the boiling point of a substance does not rise for some time due to a phase change called boiling. The boiling point varies depending on the substance. Above 100 °C, the substance is a gas.

Step-by-step explanation:

a) The ice starts melting at 0 °C.

b) At 50 °C, the physical state of ice is still a solid.

c) At 100 °C, the boiling point of a substance does not rise for some time due to a phase change called boiling. During this phase change, the substance absorbs heat without changing its temperature.

d) The boiling point of the substance can vary depending on the specific substance being heated.

e) Above 100 °C, the physical state of the substance is a gas.