Measure the Mass of Crucible, Lid and Magnesium

Experiment - Burning Magnesium to Experiment - Burning Magnesium to form Magnesium Oxide. form Magnesium Oxide.

Aim: The aim of this experiment is to investigate Aim: The aim of this experiment is to investigate the theory of conservation of mass by looking at the theory of conservation of mass by looking at the reaction of magnesium as it burns in air. the reaction of magnesium as it burns in air.

Materials: Materials: A length of magnesium ribbon A length of magnesium ribbon Crucible Crucible Balance Balance Clay Triangle Clay Triangle Tripod Tripod Bunsen Burner Bunsen Burner

Method: Method: Measure the mass of the crucible and lid Measure the mass of the crucible and lid

Measure the mass of crucible, lid and magnesium Measure the mass of crucible, lid and magnesium

Heat until reaction starts Heat until reaction starts

As the reaction is taking place you will need to As the reaction is taking place you will need to carefully raise the lid to let in some air. Be careful carefully raise the lid to let in some air. Be careful not to lose any smoke as the smoke is made up of not to lose any smoke as the smoke is made up of tiny particles of magnesium oxide. tiny particles of magnesium oxide.

Allow to cool Allow to cool

Measure the mass of crucible, lid and magnesium Measure the mass of crucible, lid and magnesium oxide. oxide.

Discussion Questions: Discussion Questions: Results from 2008 Results from 2008

Experiment A B C D E F G H Experiment A B C D E F G H Mass of Mass of magnesium 5.0 8.0 6.0 9.0 7.0 3.0 4.0 10.0 magnesium 5.0 8.0 6.0 9.0 7.0 3.0 4.0 10.0 burnt (g) burnt (g) Mass of oxide Mass of oxide 8.3 13.3 10.0 15.0 9.2 5.0 6.7 16.7 8.3 13.3 10.0 15.0 9.2 5.0 6.7 16.7 produced (g) produced (g) Q1: Draw a scatter graph to show these results. Q1: Draw a scatter graph to show these results. Mass of magnesium goes on the horizontal axis Mass of magnesium goes on the horizontal axis Q2: Draw a line of best fit through the points on Q2: Draw a line of best fit through the points on your graph. your graph. Q3. Which experiment does not fit in with the Q3. Which experiment does not fit in with the pattern pattern Q4. Describe the pattern in the results Q4. Describe the pattern in the results Q5. Use your graph to predict how much Q5. Use your graph to predict how much magnesium oxide should be made from: 7g, 2g, magnesium oxide should be made from: 7g, 2g, 12g of Magnesium. 12g of Magnesium.

Conclusion: Write up a conclusion to your Conclusion: Write up a conclusion to your practical. practical.