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

What equation is right when burning when heating copper carbonate.

Extracts from this document...


Lewisham 31-10-2003 College Candidate name: Roland Lucien Ewas Ambassa Assessor: Bernice Ferdinand Science investigation for OCR coursework Chemistry coursework: TITLE What equation is right when burning when heating copper carbonate INTRODUCTION Basic copper carbonate occurs in nature as the mineral malachite (CuCO3) it can be synthesised in the laboratory regardless of its source, basic copper carbonate has the same composition (CuCO3). Copper carbonate is a green powder. When heated it decomposes to give a black colour of copper oxide and the reaction releases carbon dioxide. When it is heated, CuCO3 splits up or decomposes. When one substance splits up into two or more on heating, this is called "thermal decomposition". The carbon dioxide gas formed is lost to the air or collected, so the copper carbonate loses mass the copper oxide formed weighs less than the copper carbonate. However, the mass of copper carbonate equals the total mass of the copper oxide and carbon dioxide because the same atoms are present but in different ways. WHEN ONE SUBSTANCE SPLITS UP INTO TWO OR MORE ON HEATING, WE CALL THIS 'THERMAL DECOMPOSITION' AIM The aim of this investigation is to determine which equation metal carbonate form when it is heated. We will achieve this by heating the metal carbonate then look at the colour of the product formed, working out the mass of the two products if they are equal to the heated mass of copper carconate and investigating the volume of gas evolved. ...read more.


APPARATUS - Gas Syringe - Bunsen Burner - Heat Mat - 2 Clamp Stands - Boiling Tubes - Bung & Piping - Bigital balance - Spatula - pouder of copper carbonate - weight bohle - goggle - lab coat DIAGRAM METHOD step 1: Firstly, I set up the clamp stands, gas syringe and bunsen burner as shown in the diagram. Step 2: Using a digital balance, weight the tong and record it mass (T) it and add with accuracy 0.4 g of metal carbonate. Step 3: Pour the pouder in the boiling tube making sure that there is no rest in the weight bohle or minimase lost of the pouder as possible as it is. Step 4: Connect the boiling tube and the gas syringe with bung &piping then hold both the syringe and the boiling tube with the clamp stands Step 5� Turn on the gas and light the Bunsen burner. burn until all the metal is turned black Step 6: Check when the volume of gas releaved stop increase turn thefire off and record the volume of gas this volume should be accurately recorded to minimise reading errors. Step 7: remove the burg from the boiling tube after cooling it, weight the remaining black product. This mass is very important because it will also help me to find if the mass of copper carbonate equals mass of the two products formed. ...read more.


My preliminary experiment shown me that it was the equation 1 But to finaly decide this I have to check if the mass of CuCO3 equals the sum of mass of (CO2 and CuO) m1 = 0.4g m2 =0.258g V1 m V1 m1 n3 = = = Vo Mco2 Vo Mco2 V1 x Mco2 So m1 = Vo 0.077 x 44 m1 = = 0.141g 24 CONCLUSION m1 + m2 = 0.141g+ 0.258g = 0.399g this is slightly 40, which is the mass of CuCO3 used. so my prediction was right the mass of the reactant equals the sum of product. The correct Equation is CuCO3(s) CuO(s) + CO2(g). RISK ASSESSEMENT To make sure that this investigation is a safe one the following safety procedures have to be followed. � When the Bunsen burner is not being used it should be put on a yellow flame. This is the safety flame and is visible and cooler � If a test tube cracks or melts turn off the Bunsen burner and stop the investigation immediately. � Always wear safety goggles. � If you can smell gas turn all of the gas taps off immediately. � Pull the delivery tube out of the cylinder before you stop heating. . Wear a lab coat, as copper carbonate is corrosive . Avoid contact between the delivery tube, which is made of rubber and fire, as smoke of burning rubber might be suffocant. ...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. The rates of reaction between CaCO3 and HCL

    curves of best fit these have been draw so that nay anomalous results can be highlighted. The curve of best shows any data which does not fit the pattern. The shape of a graph for any reaction is: A smooth curve that levels out at the top this shows the reaction ending.

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

    0.35 57.98 0.28 58.64 0.42 105 58.22 0.37 57.93 0.33 58.60 0.46 120 58.16 0.43 57.89 0.37 58.55 0.51 Concentration 29.2g dm-3 Concentration 21.9g dm-3 Mass of marble chips: 10.00g Mass of marble chips: 9.99g Mass of marble chips: 9.99g Time (seconds) Mass (g) Change in mass (g) Mass (g)

  1. Thermal Decomposition of copper carbonate

    1 mole of a molecular compound contains 6.01 x 1023 molecules'. This means that in a reaction in which 2 molecules of one substance react with 1 molecule of another - for instance the formation of water: 2H2 + O2 ?

  2. Making magnisium carbonate (MgCO3)

    For example MgCO3 molecule consist of magnesium, carbon and 3oxygen so to calculate its RMM we add up the atomic masses of magnesium, carbon and 3oxygen For example Mg + S + O4 Mg + C + O3 24 + 32 +16(4)

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

    Whilst carrying out this experiment I encountered many unexpected errors and I had to overcome them on the spot. The first error I encountered was the connecting of the Bunsen burner to the gas tap. This was a problem because I could not get the pipe from the Bunsen burner

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

    The tap will open a valve which, with the help of gravity, will allow the soap solution to pour into the flask. Stopping it at every 1cm3 gives you intervals which will be helpful because then you won't have to guess when you should close the tap.

  1. To investigate the thermal decomposition of copper carbonate and try to prove that the ...

    and 44g of carbon dioxide (CO2). This means when it is thermally decomposed, we lose 44/124 of carbon dioxide or 44/124 x 100 = 35.5% of carbon dioxide. My main experiment is to prove this theory. Plan: I predict that when thermally decomposed copper carbonate loses 35.5% of carbon dioxide.

  2. Electrolysis COursework

    0.05 3 1.53 1.59 0.06 Average 0.06 6 1 1.41 1.51 0.1 2 1.73 1.82 0.09 3 1.58 1.66 0.08 Average 0.09 8 1 1.56 1.67 0.11 2 1.48 1.57 0.09 3 1.57 1.68 0.11 Average 0.10 Conclusion: From the graph, its easily noticeable that as the voltage increases, the mass extracted does too.

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