LAB DAY

Today was our first lab day. No one was injured, all was well. We learned how to distinguish between CHEMICAL and PHYSICAL changes.

Please refer to the Tuesday, September 28^th, 2010 Blog if you don’t remember their properties. But, if you’re too lazy to scroll down, or you feel insecure with the picture of Jodie’s dog, Bobby, staring at you, here’s a brief definition:

CHEMICAL CHANGE: substances form to create NEW substance(s), irreversible. (e.g. burning wood)

PHYSICAL CHANGE: NO new substance is formed, reversible. (e.g. melting ice cube)



Glass Square/ Experimental Results Table



During the lab, we used a set of 4 unknown solutions, and combined them in a 4x4 glass square using medicine droppers. There were only six different combinations. Some had no change, but others showed surprising results.



Test Tubes







Medicine Dropper



Fun Fact of the Day

DID YOU KNOW… the amount of iron in an adult’s body is equivalent to the amount of iron in an iron nail??

By: Jason Zhang