1. The Effect of Aspirin Concentrated Water on the Growth of Plants
Tim Ko

2. Problem Statement
Will the presence of aspirin concentrated water in soil affect the growth of plants?

3. Hypothesis
If an aspirin concentration of water is increased, then plants will grow at a slower rate.

4. Background Information
What is Aspirin?
How to Find the Concentration of Aspirin
Best Environment
Tomato (Lycopersicon esculentum)

5. Design Diagram
Title: The Effect of Aspirin Concentrated Water on the Growth of Plants
Hypothesis: If an aspirin concentration of water is increased, then plants will grow at a slower rate.
IV : Aspirin Concentration of Water
Levels
Water (0 g/L) - control
5 g/L
10 g/L
15 g/L
Trials 10

6. Design Diagram (cont.) DV: Height of Plants (cm)
CONSTANTS: type of soil, amount of soil, type of pots, water (tap), amount of water, type of plant, same environment, planting procedure, depth of seed, same type of aspirin

7. Materials Miracle Grow Soil Tomato Plant Seeds Water 40 100 mL pots
Cups
Aspirin
Ruler
Clock
Mortar
Pestle
Scale
Spoon
Graduated Cylinder (100 ML)

8. Procedure 1) Plant 40 pots of tomato plants.
2) Label 10 of the pots ‘control’ and label 10 of the pots for each IV (5 g/L, 10 g/L, 15 g/L)
3) For 10 of the pots, water daily with 20 mL of tap water (control).
4) Dissolve aspirin (5 g, 10 g, 15 g) in 1 liter of water.

9. Procedure (cont.) 5) Water respectively with 20 mL of water.
6) Observe and record the growth of the plants for 4 weeks.
7) Record observations in a data table.

10. Safety Cautions
Do Not Consume Any Materials Used in this Experiment!

11. Before the Experiment

12. During the Experiment

13. After the Experiment

14. Results Trials Control (cm) 5 g/L (cm) 10 g/L (cm) 15 g/L (cm) 1 7.4
3.6 2
12.9
4.2
2.6 3
10.1
2.4
1.5 4
10.2
0.4 5
8.4
2.2
1.6 6
8.5
3.8
1.8 7
8.3
4.3
0.8
0.2 8
3.7
2.1 9
7.6
3.3
0.9 10
2.9
0.3
Average
8.97
1.39
0.05

15. Average Calculations
Control : = 89.7 / 10 = 8.97
5 g/L : = 33 / 10 = 3.3
10 g/L : = 14 / 10 = 1.39
15 g/L : = .5 / 10 = .05

16. Results (cont.)

17. Statistical Analysis(ANOVA)
Control
5 g/L
10 g/L
15 g/L
Mean
8.97 cm
3.3 cm
1.39 cm
0.05 cm
Sample Size 10
Standard Deviation
1.665
0.744
0.785
0.108
# of groups 4
Control : = 89.7 / 10 = 9
5 g/L : = 33 / 10 = 3.3
10 g/L : = 14 / 10 = 1.4
15 g/L : = .5 / 10 = .05

18. Statistical Analysis (cont.)
Source of Variation
Sum of Squares
Degrees of Freedom
Mean Square
F-test Statistic
Aspirin Concentration
SSTR = 3
MSTR =
FData =
Error
SSE = 35.58 37
MSE =
.96
Total
SST =
5 g/L : = 33 / 10 = 3.3
10 g/L : = 14 / 10 = 1.4
15 g/L : = .5 / 10 = .05

19. Statistical Analysis (cont.)
Total Sample Size = 40
Avg of All plants = cm
SSTR = 10( )2 + 10( )2 + 10( )2 + 10( )2 =
SSE = 9(1.665)2 + 9(.744)2 + 9(.785)2 + 9(.108)2 =
SST = =
MSTR = /3 =
MSE = 35.58/37 = .96
F-value = /.96 =
Critical Value = 2.79

20. Conclusions Results support hypothesis
Experiment shows significant results based on statistical analysis.

21. Types of Errors Initial Planting Procedure
Inconsistent Watering of Plants
Different Environments

22. Improvements Keep all constants as “constant” as possible More trials
Longer Experiment Time
Precise measurements

23. Extensions / Applications
Experiment with other common medicines.
Be aware of where I dispose of medicine.
Prevent others from making the same mistake.

24. Acknowledgements
Mom and Dad
Mrs. Pietrangelo
Ms. Paine

25. Bibliography
Armstrong, W. P. "Tomato, Tomatillo, Eggplant, Nipplefruit & Chayote." WAYNE'S WORD. 03 Apr Web. 05 Oct
"Calculations of Solution Concentration." Sciencegeek.net. Web. 05 Oct
Campbell, Neil A., Lawrence G. Mitchell, Jane B. Reece, and Martha R. Taylor. Biology Concepts & Connections. 4th ed. San Francisco: Benjamin Cummings, Print.
"Great Plant Escape - Growing Plants Indoors." University of Illinois Extension- Urban Programs Resource Network - University of Illinois at Urbana-Champaign. Web. 05 Oct
Nordqvist, Christian. "What Is Aspirin? What Is Aspirin For?" Medical News Today: Health News. 20 Aug Web. 05 Oct
"Plant Structure and Function." University of Illinois at Chicago - UIC. Web. 05 Oct