So and So That

so / so that / so adj, adv that

so = therefore, thus, hence

coordinating conjuction

The apartment was too hot, so we opened the window.

   (the situation/action)            (the result of action)

so that = in order to/ in order that

adverb clause

It helps to lower blood sugar so that you feel less hungry.

so adj/adv that = very

This morning, the construction was so loud that we could not sleep.