Tuesday, December 11, 2012

Ionic Compound Lab

Ionic Compound Lab:

Pre-Lab:
1. Read the entire procedure. Identify the variables. List any conditions that must be kept constant.
-In this experiment I think that the amount of Magnesium must be kept constant. And we must make sure we get a correct mass value before we burn the Magnesium and a correct mass after it is burnt. 
2. Write the electron configuration of the magnesium atom.
-The electron configuration is 1s2 2s2 2p6 3s2
     a. Based on this configuration, will magnesium lose or gain electrons to become a magnesium ion?
I think that magnesium will lose electrons to become a magnesium ion.
     b. Write the electron configuration of the magnesium ion.
-The electron configuration of the magnesium ion is 1s2 2s2 2p6.
     c. The magnesium ion has an electron configuration like that of which noble gas?
-The magnesium ion has an electron configuration like that of Neon.
3. Repeat question 2 for oxygen and nitrogen.
-The electron configuration of the oxygen atom is 1s2 2s2 2p4.
-I think that Oxygen will gain electrons to a  oxygen ion because it has six valence electrons.                  - The electron configuration of the oxygen ion is 1s2 2s2 2p6.
-The electron configuration of the Nitrogen atom is 1s2 2s2 2p3.
4. Prepare your data table.
5. In your data table, which mass values will be measured directly? Which mass values will be calculated?
-The mass values that will be measured directly are the masses of the empty crucible, the mass of the the crucible with the Magnesium in it before heat, and then the mass of the the crucible with Magnesium in it after heat. The masses that will be calculated are the mass of the Magnesium before heat and then the mass of the the Magnesium Product at the end of the experiment. 
6. Explain what must be done to calculate each mass value that is not measure directly. 
-To calculate the masses that aren't measure directly we will have to subtract the mass of the empty crucible from the mass of the crucible and the magnesium. And then subtract the mass of the empty crucible from the mass of the crucible and magnesium after heat. 

What we used:

Magnesium Ribbon
Crucible
Ring stand and ring
Clay Triangle
Laboratory Burner
Stirring Rod
Crucible Tongs
Centigram Tongs
Centigram Balance
10-mL Beaker
Distilled Water
Conductivity Tester

Procedure:
1. We set up our area. We put the ring on the ring stand and placed the clay triangle on the ring.
2. We measured out the mass of the crucible and wrote it down.
3. We used a ruler to measure out 25 cm of magnesium ribbon. And then rolled the Magnesium into a ball. We placed the ball into the crucible and recorded the mass of the crucible and Magnesium.
4. We put the crucible on the clay ring, and turned on the gas for the burner.
5. Mr. Ludwig lit the flame, and we placed the crucible over the flame.
6. We waited for the Magnesium to burn.
7. After it had burned we turned off the flame and left the Magnesium to cool.
8. After it had cooled we measured the mass of the crucible and Magnesium product and wrote it down.
9. Then we dumped the Magnesium Product into a beaker with 20 mL of distilled water.
10. We then tested the Conductivity of the solution and recorded it.

Analyze and Conclude:


Click Here! For my Conclusion!

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