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

Whats in the bottle?

Extracts from this document...

Introduction

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.

Middle

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.

Conclusion

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. Peer reviewed

    Rate of reaction between Calcium Carbonate and Hydrochloric Acid

    4 star(s)

    Use powdered calcium carbonate instead of marble chips which would increase the total surface area of the calcium carbonate resulting in a faster reaction.

  2. Calcium carbonate reacts with dilute hydrochloric acid according to the equation below

    1 2 3 5 7 10 11 13 14 16 17 Conclusion As the percentage of hydrochloric acid is increased, the amount of gas produced by the reaction increases. At 100% there was more gas produced than at all of the other percentages below this.

  1. Rate of reaction of hydrochloric acid on magnesium.

    Concentration of HCl (Molarity) Rate of reaction (cm3/s) (2d.p) 0.3 4.4/30= 0.15 0.4 6.1/30= 0.20 0.5 9.3/30= 0.31 0.6 13.7/30= 0.46 0.7 17.4/30= 0.58 Another key factor is the gradient for each graph. This analysis the rate of reaction on how the concentration influences the outcome of the speed of the reaction.

  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. should salt be banned?

    But he says "that most people have some salt sensitivity," says Jones. "Some have more than others." Problem is, there is no easy test for determining salt sensitivity, he explains. His personal philosophy: "Everyone hopes to become old, and as we get older, we become sensitive to salt.

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

    However some unexpected results occurred when the unexpanded polystyrene, which has a density of 0.362g/cm3 , floated and sank. This unusual outcome was a result of the way it was placed into the water. When the unexpanded polystyrene was put on the water horizontally, it floated.

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

    Remember to use new equipment or wash your used equipment thoroughly otherwise your results may become corrupted due to contaminated equipment. Explanation for the steps 1. The heat-proof mat prevents damage to the tables by not conducting the heat through to the table.

  2. GCSE Chemistry - Sodium Thiosulphate

    This can be justified by relating to the collision theory. When the temperature is increased the particles will have more energy and thus move faster. Therefore they will collide more often and with more energy. Particles with more energy are more likely to overcome the activation energy barrier to reaction and thus react successfully.

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