Construct a graph of the data on the grid - HSC - SSCE Chemistry - Question 28 - 2018 - Paper 1
Question 28
Construct a graph of the data on the grid.
Clearance height (mm)
35 40 45 50
CO concentration (ppm)
120 87 50 18
Worked Solution & Example Answer:Construct a graph of the data on the grid - HSC - SSCE Chemistry - Question 28 - 2018 - Paper 1
Step 1
Label the axes correctly including units
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Answer
On the horizontal axis (x-axis), label it as 'Clearance height (mm)'. On the vertical axis (y-axis), label it as 'CO concentration (ppm)'.
Step 2
Use appropriate scale
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Answer
Choose a suitable scale for both axes. For the x-axis, a scale of 5 mm per 5 mm could be effective to accommodate the values 35, 40, 45, and 50. For the y-axis, an appropriate scale could be 10 ppm per 5 mm to cover the range from 0 to 120 ppm.
Step 3
Plot points correctly
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Answer
Plot the following points based on the data:
(35, 120)
(40, 87)
(45, 50)
(50, 18)
Step 4
Rule a line of best fit
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Answer
Draw a line of best fit that starts at the upper left corner and trends downward towards the lower right corner, indicating the negative correlation between clearance height and CO concentration.
Step 5
Include ONE correct feature
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Answer
Add a title to the graph: 'Effect of Clearance Height on CO Concentration'.
