Today, we did Lab 5B. And let me begin by saying that i really enjoyed this Lab. There were a lot of chemical reactions/experiments that we had to do, which was fun. Anyways our objective was to observe a variety of chemical reactions. In these reactions we saw synthesis, decomposition, single replacement, and double replacement reactions. We did 7 reactions in this Lab. Here is a summary of each reaction.
1. In this reaction we burned a piece of copper. The copper turned into a shiny silverish color.
2. Here we put a nail inside a tube and filled it with a chemical. The nail after 20 minutes turned pinkish brown.
3. This reaction was one of my favourites. We took the shiny blue powder and heated on a bunsen burner. After time the subtance solidified and turned into a cement like powder.
4. After reaction 3. We added drops of water to the cement like substance. This caused the substance to turn back to blue(it's original form).
5. In this reaction my partner and I added two clear liquids together. The liquids became milky white and began to precipitate.
6. Here we added a silver substance with a clear solution. after a few minutes the substance began to bubble and take on a more metallic color.
7. Similar to reaction 6 we added a colorless substance with a grey powder. The top of the solution began to bubble and the frey substance turned black. Also the gas evaporated out of the test tube.
Here is a video that shows reaction number 1 and reaction number 3
No comments:
Post a Comment