• 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
  11. 11
    11
  12. 12
    12
  13. 13
    13

Science Coursework Investigation ions

Extracts from this document...

Introduction

Section 1 - PLANNING Write a detailed plan of your experiment. Make sure it is a fair test. Draw a diagram of apparatus if you like. Predict what will happen and say why, using scientific background material, which might include information from books, CD-ROMs or the Web. Mark scheme: For 2 marks: Plan a simple, safe experiment. For 4 marks: Plan a fair test, choose equipment, and make a prediction. For 6 marks: Use scientific knowledge to plan, decide what to control and vary. Make a prediction. Decide on a suitable number of measurements. For 8 marks: Use scientific knowledge to plan, trying to be precise and reliable. Make a prediction and justify it. Use information from other sources. List of Equipment: Measuring cylinder Boiling tube Trough Delivery tube Goggles Spatula Gloves (if possible) Boiling tube rack Digital weight measurer To make this experiment a fair test I will have to keep the following factors the same: Same size boiling tubes. Volume of Acid Period of time Amount of metals. Temperature Starting temperature of the acid Surface area of the metals Safety Safety precautions are needed because I am dealing with reactive metals, which can injury. The following things need to be acknowledged to, in order to keep this experiment safe: � Be careful not to knock over the rack with the boiling tubes in � Be careful not ...read more.

Middle

I also predict that Copper will not react with any metal. I know this because copper is lower down in the reactivity series. Info sources * Encarta Encyclopedia * Britannica Encyclopedia * Revision guide * Nottingham bluecoat school website Section 2 - OBTAINING EVIDENCE Carry out the experiment. Put your results in a properly labeled table. Repeating experiments gives you more marks. Take averages (means) where this is appropriate. Mark scheme: For 4 marks: Make enough measurements and record them. For 6 marks: Make accurate observations, repeat them and record them clearly. For 8 marks: Use equipment with precision. Record a sensible number of reliable measurements. Metals Time (min) Hydrogen Produced (cm3) Test 1 Test 2 Test 3 1 1 0 2 2 2 1 5 3 2.5 2 7 4 3 3 9 (Zn) 5 4 4 10 1 1 2 7 2 2.5 4 10 3 3 5 12 4 5 7 14 (Fe) 5 5.5 8.5 18 1 6.1 5.2 6 2 9.3 8.6 6.3 3 11 10.1 6.7 4 Out of time 10.5 6.9 (Mg) 5 Out of time 10.8 7 1 0 0 0 2 0 0 0 3 0 0 0 4 0 0 0 (Cu) 5 1 0 0 In obtaining evidence accuracy is everything and to this the following step were taken: Set balance to zero, (use the Tare or T button) ...read more.

Conclusion

Temperature of the acid If the starting temperature of the acid is different each time the speed at which the acid particles collide with the metals will increase more the higher the temperature goes. This means the acid particles move with more energy, which means they will collide with the magnesium with more energy, which will give more successful collisions per second. Surface area of the metals If the metals had a bigger surface area each time the experiment was done, then the acid particles will have a bigger area to collide with, so more collisions will occur every second and the more collisions per second than the more successful collisions per second. Type of acid used If you changed the type of acid then the rate of reaction would change. Hydrochloric, Sulphuric and Nitric acid all would produce a different rate of reaction, so if I do change the type of acid then all three kinds would produce a different set of results. Key factor The factor that I would most like to improve on is the concentration of the acid. I choose this because several different concentrations can be made up before the experiment and they will able me to be more accurate. There will be several different concentrations of acid, which will give me a wide range of results, which will be reliable and reproducible. Ahmad Khan (10F) ...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 Aqueous 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 GCSE Aqueous Chemistry essays

  1. Marked by a teacher

    chemistry coursework

    4 star(s)

    DO NOT EAT OR DRINK ANY SUBSTANCES. Spillages should be reported to your teacher and mopped up. Breakages should be reported to your teacher. Stools must be placed under desks at all times when carrying out the experiment. Blazers must be removed when performing the experiment. The experiment must be performed standing up, this is to prevent bodily harm.

  2. How much Iron (II) in 100 grams of Spinach Oleracea?

    (aq) react with 5 moles of Iron (II), and by using the equation below it is possible to work out how much Iron (II) is present in the spinach extract solution and then use this to work out how much Iron (II)

  1. Reactivity of metals Investigation

    Ca(s) + 2HCL(aq) CaCL2(aq) + H2(g) + (Energy) * Magnesium + hydrochloric acid magnesium chloride + hydrogen + (heat) Mg(s) + 2HCL(aq) MgCL2(aq) + H2(g) + (Energy) * Zinc + hydrochloric acid zinc chloride + hydrogen + (heat) Zn(s) + 2HCL(aq) ZnCL2(aq) + H2(g) + (Energy)

  2. construction science and materials

    (an alloy is a mixture with metallic properties that contains at least one metal). It is made from iron by the basic oxygen process. Molten iron from the blast furnace and scrap iron is put into furnace. Oxygen is blown into the furnace to reduce the carbon in the molten iron.

  1. DECOMPOSITON OF HYDROGEN PEROXIDE WITH HEAVY METAL CATALYSTS

    Giving the example of manganese oxide, at 20 seconds it was at 15cm3 and then at 70 seconds it was 49cm3. This re-enforces the conclusion gathered above. However, from the graphs of the other catalysts, it can be seen that they differ from manganese oxide.

  2. metal extraction and reactivity

    extraction of unreactive metals i. copper * Crushed ore is concentrated by froth floatation * A chemical known as a collector is added to an ore/water mixture and sticks to the surface of copper pyrites particles, giving them a water repellent coating.

  1. Neutralisation Coursework

    Fill the burette on the floor. This is so the burette is not situated above your head, which could be dangerous dealing with acid. 3. To have a well ventilated room because Ammonium Hydroxide can burn the inside of your nose.

  2. Investigate 'How much gas is released when a metal reacts with an acid.'

    The measurements on the side of the measuring cylinder are also quite big and easy to read. As you can see, I am also using cling film in the experiment. This is to cover the top of the measuring cylinder as I turn it upside down to submerge it in

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