1. 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

2. 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

3. 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

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

5. 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)

6. 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