A conclusion has four parts:
1. Reflects back on the original hypothesis and states whether it was supported by the results of the investigation or not.
2. Answers the original question that started the investigation and includes the results that were used as the basis for that answer.
3. States any inferences that can be made from the results of the experiment.
4. Mentions any additional questions that could be investigated or information that could be researched in the future.
Write a conclusion
Use the sentence Starters by filling in the blank to write a conclusion for your experiment.
My hypothesis was_____________. (supported or not supported)
In this experiment, I found out that ____________.
The results (data) showed that________
One thing I can infer from my experiment is...
I would also like to find out________.
Question: Here is the details to help you out
What effect does adding soap to water have on the number of drops that can be placed on a penny?
Trial 1: Tap Water 42 and soapy Water 30
Trial 2: Tap Water 43 and soapy Water 29
Trial 3: Tap Water 42 and soapy Water 31
Average mean: Tap Water 42.333 and soapy
Water 30
The data collected from the experiment show that when soap is added to water, the number of drops that can be placed on a penny decreases compared to tap water alone. The average mean number of drops for tap water was 42.333, while the average mean for soapy water was only 30. This indicates that the addition of soap had a significant impact on the surface tension of the water, making it more difficult for water drops to stay on the penny. Each trial consistently showed fewer drops for soapy water compared to tap water, suggesting a clear trend in the data.
The independent variable in my science project is the types of water. Tap vs soap.
The dependent variable in my project is the number of water drops on the surface of the penny.
hypothesis: If a penny is covered with soap, then it will not hold as many water drops because the soap does not allow for adequate surface tension to occur.
Prediction: Soap reduces the surface tension of water, allowing the penny to hold more drops with soap compared to without soap. The relationship between the water molecules is broken by the soap molecules, allowing the drops to more easily spread and cover more of the surface of the penny.
Instructions 1. Gather all materials.
2. Start by cleaning the penny with water and soap to ensure it is free from any dirt or debris. Dry it with a paper towel or tissue.
3. Fill a small container with water, ensuring it is deep enough to submerge the penny completely.
4. Using the eye dropper, carefully take a few drops of water and place them on the penny's surface. Observe and record the number of drops that can be held before spilling over.
5. Empty the container and refill it with 1 tablespoon of soap and add water to the container. Ensure that the water is mildly soapy, not overly concentrated.
6. Repeat step 3, placing a few drops of soapy water on the penny's surface. Again, observe and record the number of drops that can be held.
7. Compare the results from steps 3 and 5 to determine the effect of adding soap to the water
8. Repeat the experiment three times to ensure accurate results. Record all results of each trial on a table spreadsheet.
9. Clean and dry the penny after each trial to remove any residue and ensure consistent results.
10. Analyze the data and draw conclusions about the effect of adding soap to water on the number of drops that can be placed on a penny. Consider factors such as the surface tension of water, the shape of the penny, and the interactions between the water droplets.
My hypothesis was that if a penny is covered with soap, then it will not hold as many water drops because the soap does not allow for adequate surface tension to occur. This hypothesis was supported by the results of the experiment.
In this experiment, I found out that the number of drops that can be placed on a penny significantly decreases when soap is added to the water. The average mean number of drops for tap water was 42.333, while the average mean for soapy water was only 30.
The results showed that the addition of soap had a clear impact on the surface tension of the water, making it more difficult for water drops to stay on the penny. Each trial consistently showed fewer drops for soapy water compared to tap water.
One thing I can infer from my experiment is that soap disrupts the surface tension of water, making it harder for drops to stay intact on the penny's surface. This supports the hypothesis that soap reduces the ability of water drops to adhere to the penny.
I would also like to find out if using different concentrations of soap in the water would produce varying results on the number of drops that can be placed on a penny. Additionally, it would be interesting to explore the effect of other substances besides soap on the surface tension of water and its impact on the penny. Further research in these areas could provide valuable insights into the interactions between liquids and solids.