Green Stuff Lab

1)      In this lab, we first gathered all of our materials. This included: two beakers of the same or different size, one filled with water, and the other filled with the “Green Stuff” in it, and aluminum foil. We made observed the characteristics of the “Green Stuff” and poured the water into it. It then started to change colors as it started to disintegrate into the water. After it fully disintegrated into the water, we used the dropper and put a small amount of the mixture onto the aluminum foil. We proceeded to drop the liquid substance onto the aluminum foil, it started to bubble and soon it became a rust-like layer on the foil.  The color of this rust-like layer was a dark red, and eventually burned through to the table. We then placed the aluminum foil into the beaker of the “Green Stuff” and water mixture. The aluminum foil started to disintegrate into the mixture. We then made more observations and proceeded to clean up our work areas.

2)      A: You can determine if a property of the “Green Stuff” is a physical property because of its color. Color is part of the substance’s physical appearance; therefore it is a physical property. You can also determine if a property of the “green stuff” is a chemical property because of its reactivity with water, once it was placed into the water it immediately changed into a light blue color.

     

      B: The different phases of the matter of the chemicals used in the experiment were solid, liquid, and gas. The “Green Stuff” was a solid, because it of definite shape and volume; neither liquid nor gaseous. The water was a liquid because it didn’t have a definite shape but it was not a gas. Once the water and the “Green Stuff” were mixed, it became a liquid. The aluminum foil was a solid, because it had a definite shape, it was also a solid when the water mixture was on it. When it was fully placed into the water mixture, it was also a solid.

3)      The material relates to what we have been doing in class, because the energy is released and absorbed in different situations when exposed to different chemical compounds. For example, when the “Green Stuff” was placed into the water energy was released because the water changed color which gives us proof that the energy was released. Also when the “Green Stuff” and water mixture was placed onto the aluminum foil energy was released because it started to bubble and steam.  Heat was being produced which gives us evidence that the chemicals interacted and released energy.

A question that I have about this lab is when we placed the mixture of water and “Green Stuff” onto aluminum foil why it changed into a dark red?

4)      An experiment that I would like to try using the “Green Stuff” would be if we heated it, we could put it over a fire and see how it reacted. If we heated it, it might turn a specific color just like it did when we mixed it with water. The heat from the flame and the “Green Stuff” would cause a chemical reaction, thus causing it to change colors.