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

The main purpose of this investigation is to test and analyse Mummion. By doing this we would hopefully be able to see what chemicals it contained.

Extracts from this document...

Introduction

´╗┐Assignment 2.4 ? A preservative for mummies 2.4.1 Introduction What is mummification? Mummification is an ancient Greek method which is intended to dehydrate the body. This would preserve the body. They believed that the body needed to be intact to serve as host for the soul. If the body was left to rot, it would destroy their soul. The process of mummification would entail the removal of the brain and other internal organs, each of these then mummified and then stored in jars. This then led on to the drying out process. The body would then be left outside to dry. After the body was completely dry. It would lead onto the wrapping of the body. The body would be wrapped. A final shroud piece would be placed on the mummy to keep all of the wrappings together. Mummion was added to the shroud to ?give? it all together. What is Mummion and what is it used for? Natron (Mummion) is a colourless salt found in various locations in the earth. Mummion is a dehydrated sodium carbonate mineral. Natron is known commonly to be used for mummification. ...read more.

Middle

Add a few drops of nitric acid solution 3. Add a few drops of silver nitrate solution 4. Results: 1. White precipitate ? Chloride (Cl-) ions 2. Cream precipitate ? Bromide (Br-) ions 3. Yellow precipitate ? Iodide (I-) ions Test for Sulphate ions (SO42-) 1. Prepare a solution of your test sample using distilled water 2. Add drops of nitric acid solution until any fizzing stops 3. Add a few drops of barium nitrate solution 4. If a white precipitate forms, the sample contains sulphate (SO42-) ions Test for Carbonate ions (CO32-) 1. Add a few drops of dilute hydrochloric acid solution to your dry sample 2. If a gas is given off, test to see if it is carbon dioxide by bubbling it through lime water (see below) 3. If the lime water turns milky white, carbon dioxide is present and the sample must have contained carbonate ions Test for Copper ions (Cu2+) 1. Prepare a solution of your test sample using distilled water 2. Add a few drops of ammonia solution 3. If the sample contains copper(II) ions (Cu2+), a pale blue precipitate forms 4. ...read more.

Conclusion

In the inference, if the result was positive, it means the chemical was present in the Mummion. 2.4.7 Evaluation In this investigation the thing I feel was most successful was how i accurately purified the Mummion. By not only using one filter paper at a time, I used two. This allowed the solution to go through two stages of paper, allowing it to be filtered well. This allowed our Mummion crystals to become more pure. In this investigation I feel I could have improved on the amount of crystals we came out with. This was mainly because the evaporating dishes were split. This meant that we had to re-do the whole purification of the Mummion again. This wasted a lot of time, which could have been spending completing the qualitative tests. I think I did keep to the plan throughout this investigation. Although when purifying the Mummion, we did use more chemical to get a clearer result. For example, we added more distilled water to try a spate the chemicals more. By completing this experiment successfully, it allowed me to find out that Mummion contained sodium, chloride and carbonate ions. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Physical Chemistry 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 AS and A Level Physical Chemistry essays

  1. Determination of the Amounts of Sodium Hydroxide Solution and Sodium Carbonate in a Mixed ...

    I have used an unreasonably long time to wash the apparatus and my motion was too slow. If I could allocate my time appropriately, I would not have made so many errors. Another way to improve is to use a pH meter instead of using an indicator to determine the equivalence point.

  2. Investigation to analyse some fruit and vegetable juices for the contents present in them.

    of cuprous oxide. RCHO + 2Cu2+ + + Cu2O + 3H2O B. Tollen's Reagent Test Tollen's reagent is an ammoniacal solution of silver nitrate and is prepared by adding NH4OH solution to AgNO3 solution till the ppts. Of Ag2O first formed just redissolve.

  1. An Introduction to Qualitative Analysis

    It won't form a ppt with other anions. These reagents will prevent any side reaction from occurring in the solution. 4. Why are the reagents used to test for anions usually a nitrate of the cation that is reacting rather than other salts of that cation?

  2. Investigating the rate of reaction between peroxydisulphate(VI) ions and iodide ions

    The Arrhenius equation The Arrhenius equation can be used to show the effect of a temperature change on the rate constant, and hence on the rate of the reaction. If the rate constant is doubled, then the rate of the reaction will also double.

  1. Methods of analysis and detection

    Infrared Spectroscopy (IR) - using wave numbers Here, IR used the characteristics that different bonds in compounds absorb different frequencies in the infrared region of the spectrum. In infrared analysis the wave numbers are used instead of frequencies or wavelengths.

  2. Neutralization investigation

    According to Chemistry A-Level by Ted Philips: ''An alkali is a substance which dissolves in water to form hydroxide ions, as it's only negative ion'', and ''An acid is a substance which dissolves in water to form hydrogen ions, as it's only positive ion''.

  1. The estimation of iron(II) and iron(III) in a mixture containing both

    * Wear a white lab coat to make sure there are no spillages on any of my clothes. * I will make sure I read all the hazard cards on all the liquids used as these are the hazards: H2SO4 - Sulphuric acid has a high exothermic reaction with water

  2. Chemistry report - In this experiment, it is a redox titration method to standardize ...

    ions. So, each iron atom has undergone oxidation, in which the oxidation number is increased from +2 to +3. Thus, the colour changes from pale green to yellow. Oxidation half equation: Fe2+ ? Fe3+ + e- Since the manganate(VII) ion is dark purple or violet in colour whereas the manganese (II)

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