📊 Part 1: Graph Types and Chemical Reactions

1. Which type of graph is most appropriate for showing how reaction rate changes over time?

Bar graph

Line graph

Pie chart

Histogram

2. Check all graph features that are essential when plotting chemical reaction data:

Labelled axes with units

Appropriate scale

Title describing the experiment

Bright colours

Best fit line (where appropriate)

3. A student is investigating how temperature affects the rate of a chemical reaction. The independent variable should be plotted on the _______ axis and the dependent variable on the _______ axis.

📈 Part 2: Interpreting Chemical Reaction Graphs

4. Look at the data below showing reaction rate (mL/min) vs temperature (°C). Plot this data on the grid provided:

Data: 20°C: 2.5 mL/min, 30°C: 4.2 mL/min, 40°C: 7.1 mL/min, 50°C: 11.8 mL/min, 60°C: 18.5 mL/min

5. Based on the graph you plotted above, describe the relationship between temperature and reaction rate:

6. Match each graph feature with its scientific meaning:

1. Steep positive slope

2. Horizontal line

3. Outlier point

4. Curved line

A. Possible experimental error

B. Non-linear relationship

C. Rapid rate of change

D. No change occurring

🔬 Part 3: Analysing Your Experimental Data

7. Using data from your previous chemical reaction experiment, create an appropriate graph below. Remember to include all essential features:

8. What type of graph did you choose and why was it appropriate for your data?

9. Identify any trends you observe in your graph:

10. Are there any anomalies or outliers in your data? If so, suggest possible explanations:

🎯 Part 4: Graph Analysis and Predictions

11. A chemical reaction produces 15 mL of gas at 25°C, 28 mL at 35°C, and 45 mL at 45°C. Based on this trend, predict the volume of gas produced at 55°C:

12. Complete the following statement about interpolation and extrapolation:

____________ involves finding values within the range of your data, while ____________ involves predicting values beyond your data range. ____________ is generally more reliable because ____________.

13. True or False: Circle the correct answer for each statement:

A best fit line should pass through every data point:

True

False

Outliers should always be ignored when drawing conclusions:

True

False

The scale on both axes must start at zero:

True

False

14. Explain how graphing chemical reaction data helps scientists understand reaction mechanisms and optimise reaction conditions: