_________undergoes spontaneous combustion at room temperature.

Define curie temperature.

Why is N_2 less reactive at room temperature?

Pragya tested the solubility of three different substances at different temperatures - and collected the data as given below (results are given in thefollowing table, as grams of substance dissolved in 100 grams of water to form a saturated solution). Pragya makes a saturated solution of potassium chloride in water at 353 K and leaves the solution to cool at room temperature. What would she observe as the solution cools? Explain.

Name two elements which are liquid at room temperature.