Convert - 40 ° F into Celsius.

Given that, Temperature in Fahrenheit scale is F = - 40 ° F Temperature in Celsius scale is C We know that relation between Celsius scale and Fahrenheit scale is C 5 = F - 32 9 C = - 40 - 32 9 × 5 = - 40 ° C Temperature of - 40 ° F in Celsius is - 40 ° C .

Balloon filled with gas bursts when taken close to fire. Why?

Gases expand more than liquids and solids. When a balloon filled with gas is brought close to the fire, the kinetic energy of the particles of the gas inside it increases which makes the gas expand and occupies more volume. Thus, these particles of gas exert pressure on the walls of the balloon and result in the bursting of the balloon. Also, the balloon starts melting.