Today, we did a lab about chemical reactions.
The purpose of the lab is to observe a variety of chemical reactions and to interpret and explain obsevations with balanced chemical equations and classify each reactions asa one of the four main types.
There was a reaction where we added solid copper(II) sulfate pentahydrate to a test tube and heated it over a Bunsen burner. Over time, the copper(II) sulfate pentahydrate changed colors (blue to white)
In this reaction, we took the results of the reaction above and added drops of water to it. The copper (II) sulfate pentahydrate changed from white to blue color.
Basically, there are four types of reactions in this lab: synthesis, decomposition, single replacement and double replacement.
There is an interesting website showing the flash of combustion, if you are interested, click the link:
http://www.pbs.org/wgbh/nova/fireworks/fire.html
