• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month
  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8
  9. 9
  10. 10

Whats in the bottle?

Extracts from this document...


Science Coursework What's in the bottle? 05/03/09 Experiment Lesson Write-up Alcohols - What's in the Bottle? Method; Detecting Alcohols: * Put a few drops of alcohol in a test tube * Add some sodium dichromate and a few drops of concentrated sulphuric acid. * Gently warm * Note down your observations Method; Detecting Sugars: * Add some sugar to a test tube, dissolve the powder to water and gently warm if necessary * Add a small account of Benedict's solution * Gently warm Results: In the first experiment I saw the liquid colour change from orange to green. In the second experiment I saw the blue solution turn into a brick red precipitate. 12\03\09 & 13\03\09F Experiment Lesson Write-up Testing for metal, positive ions and negative ions - What's in the Bottle? 12/03/09 Testing for Metals: To show the presence of various metals, if any. Method; * Open the air hole of the Bunsen burner * Heat a piece of nichrome wire in a Bunsen flame until the flame is no longer coloured * Dip the loop at the end of the wire into some acid * Dip the loop into an unknown salt * Hold the wire into the edge of the flame * Record the colour and identify the carbon using the table below. ...read more.


Alkenes - A hydrocarbon that has 1 C=C bond (double). Alcohols - An organic molecule that contains an O - H bond. Aldehydes - An organic molecule that contains a C=O bond. Formed when an alcohol is oxidised. IR Spectroscopy IR radiation is shone on the molecules. The bonds absorb energy at different frequencies and start to vibrate. We can measure the frequency at which the actual bond vibrates and we use it to determine the functional group present. 20\03\09F & 26\03\09 Experiment Lesson Write-up Coursework Write-up - What's in the Bottle? Testing for negative ions: Results; Sample A B C Carbonate (CO32-) Nothing happened Nothing happened Nothing happened Chloride (Cl-) Bromide (Br_) Iodide (I-) Yellow Precipitate Nothing happened Nothing happened Sulphate (SO42-) Nothing happened White cloudy milkish liquid Nothing happened Hydroxide (OH-) Nothing happened Nothing happened Nothing happened Final outcome: A - Iodide (I-) B - Sulphate (SO42-) C - Nothing happened Testing for metals: Results; Sample Observations A Pinky - orange B Bright orange C Nothing occured Final outcome: A - Potassium B - Sodium C - Not applicable. Testing for alcohols Results; Sample Reaction occurred? ...read more.


The Police, F.B.I., and other detectives use chromatography when trying to solve a crime. It is also used to determine the presence of cocaine in urine, alcohol in blood, PCB's in fish, and lead in water. Also to test water samples to look for pollution, detect bombs in airports, identify and measure the amounts (volumes) of such drugs as alcohol, used in forensics to compare fibers found on a victim, detecting pesticide or insecticide residues in food, also used in forensics to analyze the dye composition of fibers, separating amino acids and anions, RNA fingerprinting, separating and testing histamines, antibiotics, for separating organic and inorganic compounds so that they can be analyzed and studied, Toxicology, In sports medicine, any illegal drugs will be picked up using chromatographic techniques. (e.g.: Gas chromatography). These are just a few of the uses of Chromatography; there are literally hundreds, if not thousands, of uses for chromatography. How do we use the results we attain from chromatography? We analyze the results after development, by matching the corresponding spots to different compounds by locating them by their colour, ultraviolet light, ninhydrin (Triketohydrindane hydrate) or by treatment with iodine vapors. http://www.doggedresearch.com/chromo/chromatography.htm http://www.sciencebuddies.org/mentoring/project_ideas/Chem_img006.gif http://www.reachoutmichigan.org/funexperiments/quick/csustan/chrom.gif http://www.answers.yahoo.com/question/index?qid=20061022202156AAEvgI2 http://www.peer.tamu.edu/podium_poster_presentations/Paper%20Chromatography.ppt http://www.en.wikipedia.org/wiki/Chromatography http://www.wiki.answers.com/Q/Who_uses_chromatography http://www.wjec.co.uk/uploads/publications/5403.pdf http://www.freepatentsonline.com/5466377.html http://www.purchon.com/chemistry/chromatography.htm ...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. Calcium carbonate reacts with dilute hydrochloric acid according to the equation below

    The results are consistent with the collision theory. The rate of the chemical reactions in this experiment depended on the concentration of hydrochloric acid. The higher the percentage of hydrochloric acid the more collisions between the molecules there were, because there are more molecules.

  2. Ions - a qualitative analysis on our chemicals by flame testing.

    A Bunsen burner is very common within a laboratory the importance is safety. As u connects the Bunsen make sure that the gas pipe is secure and tight. When lighting a Bunsen burner use a splint at arms length and make sure the safety flame is on.

  1. Investigate a factor that effects the change in temperature between iron and copper sulphate.

    The reason this reading was so low was because the iron had reacted with all the copper leaving some iron filings at the bottom of the boiling tube, as there was no more copper for the iron to react with.

  2. Identifying unknown substances. The test that we did was a flame test, negative ion ...

    dip it in to a metal powder and place it in the Bunsen burner 4. see the colour it makes Metal Flame colour Potassium Light purple Barium Green Sodium Orange-yellow Lithium Bright red Calcium Red Copper Blue- green Negative ion The second part of finding the name you have to do a negative ion.

  1. Rate of reaction of hydrochloric acid on magnesium.

    Analysis: My graphs show as the time increases the amount of hydrogen gas also increases, during the reaction between hydrochloric acid and magnesium. I have realised that the time and the amount of gas produce are parallel to each other but then again when the concentration of HCl increased to 0.5M the line started to curve slightly.

  2. Our experiment consisted of two samples of water containing unknown substances, and our objective ...

    If the Bunsen burner wasn't in the centre then there may be a possibility that it will get knocked over and damage other equipment and people. 2. The gauze spreads out the heat evenly across the bottom of the evaporating basin and also protects it from being damaged by the open flame.

  1. should salt be banned?

    Prof Wiseman said, "Basically we would say don't use salt, try to use other things that will add flavour. "Because salt is added by food manufacturers, there is too much of it in our food before it even reaches our dinner table.

  2. Classify and identify different polymers to determine their physical properties and uses.

    The hole only has to be big enough to fit a medium size hook through it. 3. On the first measurement, connect the 50 g rod to the polymer.

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