Suggest a method to liquefy atmospheric gases.
It can be achieved by either increasing the pressure or decreasing the temperature which ultimately leads to the reduction of spaces between molecules.
Name A, B, C, D, E and F in the following diagram showing a change in its state.
What produces more severe burns, boiling water or steam?
Why is ice at 273K more effective in cooling than water at the same temperature?
Give two reasons to justify -
(a) Water at room temperature is a liquid.
(b) An iron almirah is a solid at room temperature.
What is the physical state of water at -