Aluminum & Copper (II) sulfate Redox Lab

Materials

• Copper Sulfate Pentahydrate


• Aluminum


• Water


• Bunsen Burner


• Scale


• round paper


• Flask


• Funnel


• Asbestos pad


• ring


• metal rod

• Safety Precaution- Make sure you put on safety glasses and wear an apron.

Procedure
First we fill a beaker with 75 to 100 ml of water. Then we started the Bunsen burner and set it up under the asbestos pad which is held by the ring on the metal rod. Then adding the beaker with water. We added 8.3 g of Copper Sulfate Pentahydrate to the water slowly and stirred it. While that is heating we measured out .45 g of Aluminum foil powder. Once the Copper Sulfate Pentahydrate is dissolved we added the Aluminum foil powder slowly and stired frequently. Keep stirring until the Aluminum can not be seen anymore this reaction will take about 15 to 20 minutes. Then we put filter paper in a funnel over the beaker and slowly poured the solution through the filter paper. After all the solution was filtered we took the filter paper and set it aside to dry. Later we weighed a piece of the same filter paper and subtracted that from the weight of the product and filter paper.


Conclusion
The weight of the product that was filtered out is .71 grams. Thing in this lab that could have messed with our results could have been the error in the amount of each substance we put in the water. The ratio could have changed our results. In order to get an actual answer we would have to repeat the lab multiple times and get and average.

Reactions the prequal

We added different types of solutions together and saw the out come. We wanted to find out the reactants and the products. By seeing what is left or the presents of hydrogen in the air. Materials 3 test tubes bunsen burner test tube holder striker zinc magnesium ribbon MnO2 CuSO4 Ba(NO3)2 CuSO4 HCl H2O2 Proper safety equipment ( goggles and aprons) Before we did anything we put on goggles to protect our eyes and then put on aprons. First we made a data table, it can be made any way as long as it as a spot for the two reactants and then the observations. We put a piece of zinc into a test tube and added CuSO4 and observed what happened. Then we put Ba(NO3)2 into a test tube and added CuSO4 and made observations. In the last test tube we put magnesium ribbon and added HCl and observed. To test for the presence of hydrogen we lit a stick on fire and put it on the tube ans observed what happened. After that we cleaned the first test tube and added H2O2 heated it and observed what happened then we added MnO2 to it and observed and then heated it and observed.

Reactants	Observation	Equation	Type of Reaction
Zinc and CuSO4	The Zinc changes to a rust color and there is no presence of hydrogen	Zn+CuSO4 → Cu+ZnSO4	Single Displacement
Ba(NO3)2	It foamed	Ba(NO3)2+CuSO4 → BaSO4+Cu(NO3)2	Double Displacement
Magnesium and HCl	It bubbled it is exothermic and popped when fire was put in meaning there was hydrogen being released in the solution	Mg+HCl → H+MgCl	Single Displacement
H2O2 plus heat	the solution bubbled and vibrated when heated	H2O2 → H2O+O2	Decomposition
H2O2 and MnO2 plus heat	The solution bubbled and turned a black color when heated enough and means oxygen was released during the experinment because the fire burnt up all the oxygen when put into the test tube then went out	C3H8+O2 → CO2+H2O	Combustion

If we had repeated the experiments multiple times we might have gotten different results.

Making Lewis Structures using models pieces to figure out the shape and the polarity of combinations of molecules.


Materials
Modeling pieces
Periodic Table


Procedure
Grab the right piece that corresponds with the molecules and put the correct amount of bonds to it and all the other molecules. Draw a three dimensional picture of the elements.























































































































Conclusion
This lab was very informative.

Paper Chromatography Lab

Paper Chromatography Lab
In this lab the use of chromatography paper and different solvents to test the retention time of the solvents.

The retention time of each solvents
Tested to see which of them had a better retention time to disperse the independent pigments
The solvents were tested to see which had a better retention time and how far to disperse the pigments up the chromatography paper
Test which color had which pigments mixed in the mixture or if it was a compound

Hypothesis
our hypothesis is that the h2o will be the best of the different fluids to be used in this experiment.

Materials
-Chromatography paper strips
-Water
-Methanol
-Isopropanol
-Hexane
-Different colors of overhead pens one of which is black
-Well plate
-Make sure to wear safety equipment including aprons and safety goggles at all times

We made three black dots on 4 chromatography strips in a line along the narrow part on one end of the strip. Then we filled a well plate for each substance half the way full. We put a crease in the chromatography in the end with the dots and put one in each well and recorded the retention time each substance took to separate the color and how far the the pigments were separated.
Then we took the best solvent and put three dots on each chromatography with different colors. And recorded the results.

Results
The water worked the best. Methanol was second best and then Hexane , and Isopropyl did work at all. Since water has hydrogen in it, it has the strongest bond making it capable of pulling the pigments farther.