Is there any software to simulate a laboratory?
There is a product called Yenka Chemistry which simulates basic chemicals/apparatus, and allows basic manipulations (for instance to show the pH change as more acid is added to base, or the amount of gas evolved). 

The program evolved from another piece of software called Crocodile Clips, which was aimed at GCSE science in the United Kingdom. For this reason it is incredibly basic, mainly focusing on inorganic reactions (acid/base, titrations, reactivity of group 1 and 2 metals), with no real capacity for demonstrating organic reactions.