List of top Science Questions on Can Matter Change its State?

Convert the following temperatures to the Celsius scale.
(a) 293 K
(b) 470 K
Convert the following temperatures to the Celsius scale.
(a) 293 K
(b) 470 K
Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.
What is the physical state of water at— 
(a) 25°C 
(b) 0°C
(c) 100°C ?
Give two reasons to justify—
(a) Water at room temperature is a liquid.
(b) An iron almirah is a solid at room temperature.
Why is ice at 273K more effective in cooling than water at the same temperature?
What produces more severe burns, boiling water or steam?
Name A,B,C,D,E and F in the following diagram showing change in its state
Name A,B,C,D,E and F in the following diagram showing change in its state