spontaneous
Spontaneous
For some non-spontaneous reactions, you can change the temperature. For other non-spontaneous reactions, there is nothing you can do to make it spontaneous. Nature favors reactions that increase a system's entropy (disorder) and nature favors reactions that are exothermic (they release enthalpy). Any reaction that does both of these things is spontaneous at all temperatures. Any reaction that does neither of these things is never spontaneous. As far as this question is concerned, the interesting reactions are endothermic reactions that increase entropy and exothermic reactions that decrease entropy. Whether these reactions are spontaneous depends on the temperature. The first variety (endothermic, increase entropy) will be spontaneous at high temperatures; the second (exothermic, decrease entropy) will be spontaneous at low temperatures. To find the temperature at which a reaction becomes spontaneous, one may apply the Gibbs equation: DG = DH - TDS where capital Ds stand for the Greek capital delta.
If G < 0, the reaction is spontaneous.
Spontaneous is an adjective. The related noun may be "spontaneousness" or "spontaneity."
Be spontaneous
Happening instantly or at the same time; something unplanned.
spontaneous
Spontaneous
spontaneous ACCOUNT
Act on your thoughts and impulses at the time. (as long as they are tasteful and legal)
'Spontaneous' means "arising from a momentary impulse". There is no animal which represents 'spontaneous'.
spontaneous
A tween can be spontaneous by being themselves.
Spontneous
Spontaneous Inventions was created in 1986.
We're part of such a spontaneous generation!