Introduction I am investigating what affects the rate at which to reactants react and make a product. The two reactants in particular are marble (CaCO3) and hydrochloric acid (2HCl); the products that they produce are carbon dioxide (CO2), water (H20) and a calcium chloride (CaCl2). The product that will be measured (to show that the reaction has taken place) will be carbon dioxide, as a gas it can easily be bubbled off and measured in …showed first 75 words of 3194 total…

…showed last 75 words of 3194 total…to do the test again I would use a water bath as this would maintain an exact temperature in the test. This would have given exact results and would have meant that there would be no anomalous created by temperature changes. Although none took place in my experiment, it had the potential to do so. Conclusion I am happy with the work and the results I have. It has proven my theory done as predicted.