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

Chemistry Lab

Extracts from this document...


Physical & Chemical Porperties of two Metals ( Mg & Cu) Physical and Chemical Properties of two Metals (Mg & Cu) " Design Design Purpose The purpose of this lab is to examine the physical and chemical properties of Magnesium and Copper. Definitions: Chemical change: A chemical change is a kind of change in which a specific type of matter is converted to a new one. Physical change: Physical changes are those in which a change in the form, but not the composition of matter occurs. Physical property: Physical properties can be observed or measured without changing the composition of matter, they are generally used to observe and describe matter. Chemical property: Chemical properties can not be determined unless a substance undergoes a change in its composition. If you answer the question "Can I get the original substance back?" with no, then you are observing chemical properties. Physical and Chemical Properties of two Metals (Mg & Cu) " Data Collection Data Collection Observations for Magnesium: Process Observations a) ...read more.


Attempt to bend a piece of copper wire. Does not break easily c) Obtain two 3 cm pieces of copper wire. Clean the surface of each with a piece of steel wool. Bronze in color, shiny and very smooth d) Place one of the pieces of copper wire from part c) into a test tube containing 3 mL of water. Add two drops of phenolphthalein solution and shake for 30 seconds. Liquid turned cloudy/white e) Using crucible tongs, hold the other piece of copper wire in a burner flame to ignite the copper. Remove the burning copper from the flame and allow it to continue to burn. Save the ignition for part f) Got warm, color of liquid turned grey, copper wire bends easily f) Place the ignition product from part e) into a test tube containing 3 mL of water. Add 2 drops of Phenolphtalein and shake for 30 seconds. No changes observed Add a 1 cm piece of copper wire to a test tube containing 1 mL of 2.0 mol/L HCL and observe for 30 seconds. ...read more.


Evaluation This experiment showed very well how different copper and magnesium react by doing several similar experiments with each of them, but I think there is a lot of room for improvement because I am quite sure that there are either changes or specific properties occuring in parts G to I with the copper. The fact that no reaction took place might have been due to not enough liquid for those experiments, it might have been helpful to either add more or do several trails with each one having a different value of liquid in it. In general it is always better to have numerous trails, this would give us better evidence about changes which might not have been regular, but occured due to unpreciseness when doing the experiments. It might have also been interesting to measure the temperature of the boiling liquid, whether or not there is a difference between the reaction with copper and magnesium or not. We only had about 40 minutes to complete our entire experiment, which was, in my oppinion, not enough time to complete all steps properly with a high preciseness, more time would have been helpful, too. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate 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 International Baccalaureate Chemistry essays

  1. flame test lab

    excited by heating , they jump to higher energy levels As the electrons go back down, and leave the excited state, energy is re-emitted in the form of visible light of different colours.The emission spectrum can be used to determine the composition of a material, since it is different for each element of the periodic table.

  2. IB chemistry revision notes

    When we get to the half filled shell we get a giant covalent structure. The next elements are gasses, being made of simple covalent molecules. The eighth element forms a monoatomic gas. * The Alkali Metals (Group I) o As we go down the group the m.p.t decreases.

  1. Reactivity series for common metals experiment.

    Chloride + Iron Fe Cl(aq) + Zn(s) Zn Cl(aq) + Fe(s) Iron(ii) Chloride + Lead No Reaction Fe Cl(aq) + Pb(s) No Reaction Magnesium(ii) Sulphate + Copper No Reaction Mg SO4 (aq)+ Cu(s) No Reaction Magnesium(ii) Sulphate + Iron No Reaction Mg SO4 (aq)+ Fe(s) No Reaction Magnesium(ii) Sulphate + Zinc No Reaction Mg SO4 (aq)+ Zn(s)

  2. The purpose of this lab was to observe chemical changes, to write balanced equations, ...

    pink- orange colour -liquid became translucent -creates a volatile odour Reaction 3: Combustion of Magnesium ribbon Magnesium Ribbon: -thin -malleable -lustrous -metallic -grey in colour -opaque -odourless -bright white light -completely covered in light -burns into an orange flame -becomes brittle -no longer lustrous, becomes dull in appearance -becomes white and ashy (black underneath the white ash)

  1. Evidence of Chemical Reactions Lab

    and Sodium metal will swap, in a double displacement format, hence the right side will be which can be rewritten as and since NaCl is soluble the complete right side will be thus the entire equation is: Data Presentation Table 2 Test Temperature Change� Colour Change Gas Emitted� Precipitate Consistency

  2. Electrolysis of copper sulphate

    This could have been avoided by placing electrode pairs at polar ends of the beaker. In this experiment, not all the copper ions are guaranteed stick to the cathode, especially when using high currents as the reaction to form Cu is happening too fast to allow adhesion.

  1. Reactivity of Metals with Water and Acid

    right, the higher the electronegativity, resulting in a greater exchange of electron. 1. Based on your gas test results, what is the gas produced in these reactions (Steps 16 and 25)? 1. Based on the gas test results and the similar ?squeaky pop? sound the elements emitted, the gas produced

  2. IB Chemistry Lab Design - compare the effect of temperature on the concentrations of ...

    For every 1 less mole of thiosulfate used there is 0.25 mole of alcohol in the sample (according to the chemical equations) which was tested. Controlled Variable Why and How it is Maintained pH of Vitamin solution Extremes of pH can also lead to the denaturing of enzymes, so if

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