Chemistry gcse coursework rates reaction conclusion, preliminary work
Time taken for the reaction to occur The period of reaction for each reaction was kept constant which is 10 minutes for each experiments. Chapter 1 Principle of Chemistry 1. I will keep everything constant apart from the variable I am changing-temperature.
To improve my experiment I could have used a balance to measure the change in mass of the acid and calcium carbonate chips. The reason for this is, I only measured the volume of carbon dioxide formed for 60 seconds, and to make my evidence more reliable could have taken more measurements so I could draw firmer conclusions. Research essay note cards formula for the reaction is: To make sure that my test went accurately and precisely I made sure that my timing was accurately done not pressing the timer too early or late.
In addition the safety rules made my experiment a fair test.