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

Finding the Empirical Formula of Magnesium Oxide

Extracts from this document...


IGCSE Practical Assessment-Finding the Empirical Formula of Magnesium Oxide Appearance of Magnesium before experiment: The magnesium was silvery and curly in a solid form before heated. Appearance of Magnesium during experiment: There was fizzing white smoke (Magnesium Oxide) coming out from the crucible when we lifted the lid to let oxygen in, it has no smell. Appearance of Magnesium after experiment: The magnesium turned in a white power form after heated. ...read more.


+ lid + magnesium oxide after heating =30.81g Mass of crucible + lid + magnesium before heating =30.69 Therefore, the mass of oxygen in magnesium oxide =0.12g Change the masses into moles Magnesium Oxygen 0.4 0.12 24 16 =0.0166 mole =0.0075 mole The ratio of moles of each element Mg : O 0.0166 : 0.0075 2 : 1 Therefore, the formula of magnesium oxide is Mg�O. ...read more.


I presume that mistakes happened when I lifted the lid up frequently to let oxygen in. The distance that I lifted it maybe more than I was supposed to; in other words, I had a high possibility of lifting the lid away from the crucible longer, which meant that there was more time for magnesium oxide to escape from the crucible. I would ameliorate the experiment next time with counting the appropriate timing and measuring the distance of lifting the lid, in order to keep the experiment fair and to the accurate figure. By Heidi Chow 10Y ...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. Experiment: To Determine the Empirical Formula of Magnesium Oxide.

    There are several possible sources of error that made the value differ from the accepted value. One possible source of error is that there might have been some magnesium left that had not reacted with the oxygen. This made the mass of oxygen that reacted with the magnesium low, which made the mole of magnesium higher than the accepted value.

  2. Relationship between mass of MgO and its formula

    0.008125 0.008125=1 0.008125 Ratio 1.44:1 15.0cm Mg O Mass 0.29g 0.07 RAM 24 16 Moles= mass RAM 0.29= 0.0121 24 0.07= 0.00375 16 0.0121 =2.76190... 0.00375 0.00375=1 0.00375 Ratio 2.76:1 Conclusion From the results I have obtained you can see that there is some sort of correlation between my hypotheses and results.

  1. Rate of reaction of hydrochloric acid on magnesium.

    5 graphs that had different concentrations of HCl and none of them contained an anomalous point. The best-fit line for all the lines had the plots either on it or very close to it so this is how it can be justified that my results from my experiment are accurate.

  2. factors affecting the errosion of a magnesium statue

    * Next I took a 5cm magnesium strip, making sure the strip was flat, and dropped it in the all acid solution. * As soon I dropped the strip into the acid I started the timer. * I then stopped the timer when the magnesium had completely dissolved and recorded the time in my table.

  1. GCSE Chemistry - Obtaining Zinc Oxide from Calamine

    * Accurately weigh the tube and malachite * Place a plug of mineral wool into the top of the test tube. * Accurately weigh the tube, malachite and mineral wool plug. * Gently heat the malachite then more strongly as it starts to react.

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

    Principles of this methodology include differentiation of manufacturing, simplification of material flow, strategic positioning of stocks, decentralized decision making in clearly defined control areas, and flow-orientated information. The challenge is therefore to achieve mass customisation - the production and distribution of customised goods and services on a mass basis (Pine II, 1999).

  1. Finding the Empirical Formula for Magnesium Oxide

    This means that the empirical formula of magnesium oxide is MgO. Looking at the periodic table, I can see how Magnesium and oxygen would bond during a reaction. Atoms bond with each other to be stable, which involves gaining a full outer shell.

  2. Is the formula of Copper Oxide the same regardless of how it is prepared?

    � With a splint light the excess gas at the end of the test tube. � Heat the Copper Oxide for 5-10 minutes depending on the amount. � Then turn off the Bunsen and wait for the test tube and contents to cool in a stream of hydrogen, as to

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