The Vengeance Formulation - S3-E9
Corrected entry: The foam Sheldon used on Kripke consists of mixing ordinary dish soap, hydrogen peroxide, and saturated potassium iodide. That kind of exothermic reaction is dangerously flammable, so it should have severely burned Kripke and the members of the university board when it fell on them.
The Vengeance Formulation - S3-E9
Corrected entry: Sheldon caused thousands of dollars of damage to university property when he exacted his revenge against Barry Kripke in an act of blatant vandalism. Not only does he get Barry, but also the university president and other dignitaries. Sheldon would have certainly faced a disciplinary hearing, along with paying for the damages he admitted to causing. But nothing of the event is mentioned after that.
Correction: Nothing about it is mentioned in the show. Doesn't mean that he wasn't punished. He's lucky he held his job, probably. That's all we know.
The Vengeance Formulation - S3-E9
Corrected entry: Penny and Bernadette are working and Penny write her hair was in two braids with clips on top. But the second time we see her (same work shift), her hair is partially pulled back with bangs.
Correction: It's not the same work shift. Note that Howard isn't wearing the same clothes.
The Vengeance Formulation - S3-E9
Corrected entry: Kripke pumps helium into Sheldon's office to make his voice squeaky while conducting a phone interview. However, the helium is pumped in via a tube that is above the height of Sheldon's head, and helium floats in air; therefore, the helium would have accumulated near the ceiling and would not have affected Sheldon within a couple of minutes as shown.
Correction: Correct, but I think you're confusing 'flammable' with hot. Without a source of ignition, the flammable foam would not ignite and generate heat from combustion. However, this reaction is sufficiently exothermic that the falling goop would not have had time to cool, and would likely have burned the individuals underneath. You can see this during the test in the apartment when the reaction generates copious clouds of steam.