Search over 10,000 free study notes

The majority of gerunds in Spanish correspod to that of the -ing ending in English. 

It can be used as a kind of adverb to refer to:

a simultaneous action,        Se ha ido ...

The perfect tense makes a distinction between the perfect tense (I have gone out) and the simple past (I went out). 

The form constits of the verb haber:

he

ha...

Diffusion is the movement of particles from an area of high concentration to low concentration (down a concentration gradient). This occurs because the particles move randomly, and eventually end up ev...

A concentration gradient occurs when you have a solute, like salt, dissolved in a solution, like water. Most of the time there won't be the same amount of salt through out all of the water - there will...