Lesson Worksheet: Interpreting and Presenting Data Chemistry
In this worksheet, we will practice analyzing, interpreting, and presenting data, recognizing trends, and identifying anomalous results.
Q1:
The graph shows the relative abundance of gases and during a reaction where transforms into .
Which of the following statements is false?
- AThe lines for and cross at relative abundance = 50%.
- BAt the end of the reaction, is completely consumed.
- CThe rate of the reaction is high at the start and low at the end.
- DAt time 0, the relative abundance of is 100%.
- EAs the quantity of decreases, the quantity of increases.
Q2:
Shown in the graph are the relative abundance of gases and during a reaction where transforms into .
At time , a modification to the system dramatically alters the abundances of and . Which of the following is the least likely explanation for the changes observed?
- AThe gases were stirred.
- BThe temperature increased.
- CA catalyst was added.
- DMore of was added.
- EThe pressure increased.
Q3:
The given graph contains numerous errors and bad practices. Which of the following descriptions is not a bad practice shown in the graph?
- AThe line of best fit passes through the origin and one data point.
- BThe points have been plotted as large, circular blobs.
- CA line of best fit has been drawn through the data instead of connecting each point.
- DThe axes are labeled, but no units are included.
- EThe scale on the -axis does not have regular intervals.
Q4:
Which of the following shows data represented as a bar chart?
- A
- B
- C
- D
Q5:
The given scatterplot shows the melting point against the density for a group of elements with stable isotopes. Which of the following statements can be concluded using information from the scatterplot only?
- AIn general, the greater the density, the lower the melting point.
- BIn general, the lower the density, the higher the melting point.
- CIn general, the greater the density, the higher the melting point.
- DThere is no correlation between the density of an element and its melting point.
- EElements with a melting point of have very low densities.
Q6:
The table below shows data that has been collected. Which type of graph would most suitably present this data?
| Elements | Hydrogen | Helium | Beryllium | Boron | Carbon | Nitrogen | Oxygen | Fluorine | Neon |
|---|---|---|---|---|---|---|---|---|---|
| Number of Recognized Isotopes | 7 | 9 | 11 | 13 | 15 | 16 | 16 | 17 | 19 |
- ALine graph
- BBar chart
- CArea graph
- DPie chart
- EScatter plot
Q7:
The results from an experiment are shown in the given table. Which type of graph would most suitably present this data?
| Time (s) | 0 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 |
|---|---|---|---|---|---|---|---|---|---|---|
| Concentration (mol/dm3) | 1.0 | 0.94 | 0.88 | 0.74 | 0.65 | 0.56 | 0.48 | 0.39 | 0.32 | 0.24 |
- ABar chart
- BScatterplot
- CFlowchart
- DPie chart
- EArea graph
Q8:
A student has plotted data from an experiment on a graph, as shown. The student wants to draw a line of best fit through the data to identify any trends and anomalous results. Which of the given graphs shows the most suitable line of best fit for the data?
- A
- B
- C
- D
Q9:
Which of the following is not a reason why two variables may have a correlation between them?
- ALuck or coincidence
- BConnection through a third variable
- CAn existing reverse correlation between the two variables
- DCausation
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