Mgo Lab
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Magnesium Lab Mr. Bartelt’s chemistry class Introduction: We have been studying chemical formulas and performing conversions all week. Today, we’re going to the lab to put what we’ve learned into practice. Today we’re going to burn/cook magnesium metal and analyze the ashes. Answer the following questions in your notes notebook before we go to lab. Be prepared to transfer this information into your lab notebook. 1) What effect will the burning/cooking of magnesium have on the mass of the magnesium? Will its mass be reduced, or increased? 2) Defend your answer above. Procedure: 1) 2) 3) 4) 5) 6) 7) 8) 9)
Set up a ring stand with a clay triangle and a CLEAN crucible. Record the mass of the crucible Measure 15 cm of a magnesium strip and place it in the crucible. Record the mass of the crucible with the magnesium in it. Place you crucible (with the magnesium in it) in the clay triangle and the lid on the crucible. Use your Bunsen burner to heat the crucible. Once all your magnesium has reacted, put a drop or two of distilled water in your crucible. It should be sufficiently hot to evaporate all the water. Allow your crucible to cool and determine the mass after the reaction. Record your data, clean the crucible, and repeat steps 1-8
Data/Results: Mass of crucible
Mass of Mg and crucible
Mass after reaction
Mass Mg Before reaction
Mass of product after reaction
Change in mass
Trial 1 Trial 2 Trial 3 (optional) Questions to be addressed in the conclusion: 1) Explain the change in mass observed in this experiment. 2) Review your pre lab. Was your prediction correct, was the data surprising? Explain. 3) What product was formed?
Set up a ring stand with a clay triangle and a CLEAN crucible. Record the mass of the crucible Measure 15 cm of a magnesium strip and place it in the crucible. Record the mass of the crucible with the magnesium in it. Place you crucible (with the magnesium in it) in the clay triangle and the lid on the crucible. Use your Bunsen burner to heat the crucible. Once all your magnesium has reacted, put a drop or two of distilled water in your crucible. It should be sufficiently hot to evaporate all the water. Allow your crucible to cool and determine the mass after the reaction. Record your data, clean the crucible, and repeat steps 1-8
Data/Results: Mass of crucible
Mass of Mg and crucible
Mass after reaction
Mass Mg Before reaction
Mass of product after reaction
Change in mass
Trial 1 Trial 2 Trial 3 (optional) Questions to be addressed in the conclusion: 1) Explain the change in mass observed in this experiment. 2) Review your pre lab. Was your prediction correct, was the data surprising? Explain. 3) What product was formed?
