Draw up tables to display data clearly Should Learning objective: To analyse data 28/07/2018 Must Draw up tables to display data clearly Should Plot xy-scatter graph with line of best fit and state trend Could Include range bars on the graph, calculate the equation of the line and explain the trend using scientific knowledge 1

Results table Clear: Columns and rows labeled, including units Repeats shown – if appropriate Averages and ranges (if appropriate) easy to find – possibly repeated in a summary table Sensible and consistent number of significant figures All parameters given – including controlled variables

Distance from burner to calorimeter 10 cm Volume water: 125 cm3 Distance from burner to calorimeter 10 cm Burn time/s 10 20 30 40 50 60 70 Mass burner before/g 172.37 172.54 172.79 173.11 173.61 174.08 174.66 Mass burner after/g 172.29 Temp water before/oC 19 21 22 Temp water after/oC 27 28 32 36 42 43 Mass fuel used/g 0.08 0.17 0.25 0.32 0.50 0.47 0.58 Temp change /oC 3 7 9 11 15

Temperature change = 32.3 x fuel used Should line pass through origin? 20 0.62

Analysis State the relationship between the temperature change and the mass of fuel If possible, give the mathematical relationship between the temperature change and the mass of fuel Explain the relationship in terms of bonds broken (needs energy) and bonds formed (releases energy)

Evaluation Method Results Conclusion Identify (significant) sources of error Suggest how to reduce the two biggest sources of error: How would you reduce the error? Why would this change help? Results Identify, and explain, any outliers Comment on the spread of data or size of range bars How good are your results? Conclusion Referring to the previous two paragraphs explain how confident you are in your conclusion, for example, you might be certain that burning more fuel releases more energy but you might not be so sure that your mathematical equation is correct