In this episode, Hank talks about how nutty our world is via Buffers! He defines buffers and their compositions, talks about carbonate buffering systems in nature, acid rain, pH of buffers, and titration. Plus, a really cool...

A quite dramatic colour change made this chemistry experiment really mesmerizing for Alex. After blending a few red cabbage leaves I poured purple cabbage juice into glasses. I added a little too many leaves, so I had to add more water...

1) Theory behind the triple sugar iron (TSI) in microbiology. 2) How to identify A/A, K/K, and K/A reactions. 3) How to identify production of gas and/or hydrogen sulfide (H2S).

Microbiology: MacConkey Agar

1) Theory behind the urease test in microbiology. 2) How to identify positive and negative reactions.

Microbiology: Citrate Agar

1) Theory behind MacConkey agar in microbiology.<br/>
2) How to identify bacteria as Gram(+) <br/>or Gram(-).
3) How to identify bacteria as Lac<br/>tose(+) or Lactose(-).