• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Finding the Number of Moles of Magnesium and Oxygen in Magnesium Oxide

Extracts from this document...


IGCSE Practical Assessment Finding the Number of Moles of Magnesium and Oxygen in Magnesium Oxide Aim The aim of this experiment is to burn a known mass of magnesium in air and to find the mass of the magnesium oxide produced. Using the results, you can then calculate the number of moles of magnesium and the number of moles in magnesium oxide. Apparatus - Crucible & lid - 10 cm length of magnesium ribbon - Sandpaper - Tripod - Pipe clay triangle - Bunsen burner - Tongs. Method 1. Before the experiment, find the total mass of the crucible and the lid. 2. Clean a 10cm length of magnesium ribbon using sandpaper, then coil the magnesium ribbon and place it inside the crucible. ...read more.


Remember to note any changes occurring during the reaction and the appearance of the contents of the crucible at the end of the experiment. 5. Let the crucible cool down, then find the total mass of the contents, crucible, and the lid. 6. Use the results to calculate the number of moles of magnesium and oxygen in magnesium oxide. Results Mass measured before the experiment Crucible and lid: 53.08g Crucible, lid & magnesium: 53.17g Magnesium: 53.17g- 53.08g = 53.09g Appearance of magnesium Before experiment: Shiny grey/ silver, ductile/ malleable During experiment (in order): Turns bright orange, releases white smoke, magnesium glows, turns into powder, powder becomes white. After the experiment: white, powdery, brittle, still in shape of coiled magnesium. ...read more.


Different issues can affect the results. E.g. the amount of oxygen reacting with the magnesium can be affected by the number of times you lift the lid during the reaction; the amount of time the reaction takes to complete can be affected by the strength of the Bunsen flame. Also, the magnesium ribbon we used might not be pure magnesium and therefore the magnesium oxide we made from the experiment may contain other materials, which will affect the accuracy of the mass of magnesium and oxygen. To improve the quality of the experiment, it's important to use pure magnesium to make sure that the substance we make only contains the two materials we need, which is oxygen and magnesium. You should also let in reasonable amount of air into the crucible during the experiment to complete the reaction that will provide possibly the most accurate results. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE Classifying Materials section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE Classifying Materials essays

  1. Percentage composition by mass of magnesium oxide

    low because some of the magnesium had already been reacting with other components and leaving a smaller amount of magnesium to react with oxygen.

  2. Rate of reaction of hydrochloric acid on magnesium.

    The actual experiment: The 5 different concentrations of hydrochloric acid I will be using in my experiment are, 0.3M, O.4M, 0.5M, 0.6M and 0.7M. I will achieve these concentrations by diluting 1M of HCl with water. I will have my weakest concentration to be 0.3M because the reaction would not

  1. Find out the theoretical yield of Magnesium Oxide, find the percentage yield of Magnesium ...

    Mass of magnesium oxide (4 - 1) 0.06 Calculations: 1. Calculate the theoretical yield of Magnesium oxide in this redox reaction. Theoretical Yield of MgO. 2Mg + O2 --> 2MgO Weight of 2Mg = 24 x 2 = 48(g) Because 24 is the relative atomic mass of Magnesium.

  2. The Formula for Magnesium Oxide.

    in the air, as I did not lift the lid enough for the magnesium to react with the oxygen in the air. If I were to do the experiment again, I would have a continuous flow of oxygen going in to the crucible or other container like so: An alternative experiment This experiment has these advantages.

  1. factors affecting the errosion of a magnesium statue

    The increased concentration will increase the number of collisions, therefore more reactions and acid rain. Acid rain may have a great effect on the rate of corrosion. Fossil fuels give off a small amount of Sulphur; "S". Acid rain will also be a mix of sulphurous and sulphuric acid and a small amount of nitric acid.

  2. Relationship between mass of MgO and its formula

    Some have been left out, as they are either striking anomalies or were not done fully. This is helpful because now I have more results and I can compare the class' results with my mine so I can produce a better conclusion.

  1. GCSE Chemistry - Obtaining Zinc Oxide from Calamine

    Once all the calamine had been measured and placed inside separate boiling tubes, they were then placed in a test tube rack (I made sure to get all my calamine from the same source so as to ensure a fair test).

  2. The role of mass customization and postponement in global logistics

    Also, after production, the finished product is stocked in inventory, which serves to meet customer demands. The basic structure of mass customization is similar to that of mass production with variety, but there are important differences. Instead of selecting one variety of a product, each customer provides unique information so

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work