Question
fill this out
Answers
Answer
Use the lab report below to Complete the Unit 7 portfolio. This lab report is based on the lab investigations given in Connexus and will be using the provided videos. Some parts of this lab report have already been filled in for you. Be sure to write 1-2 complete sentences when answering questions. One word answers will not provide full credit.
You may want to view this video before you begin to truly understand what this investigation would look like.
Name
Date
Assignment Title: Unit 7 Portfolio: Matter and Energy
Before beginning you MUST watch the video in Lesson 3, page 10. Then, you can complete the first part of this lab report by answering the questions, writing a hypothesis, determining your variables, describing your materials, and listing your procedures. Remember, you don’t actually have to DO this experiment, but you do have to plan as if you are.
Steps of the Scientific Method
1. State the Problem How much carbon dioxide does the plant Elodea absorb and how much oxygen does it release?
Why are two investigations needed to show gas exchange during photosynthesis?
How will we measure the amount of carbon dioxide that Elodea has absorbed?
How will we measure the amount of oxygen Elodea has released?
2. Hypothesis Independent Variable
____________________
IF_______________________________________________,
THEN____________________________________________
________________________________________________.
Dependent Variable
____________________
3. Experiment
Control Materials
Procedures (list steps)
1. 6.
2. 7.
3. 8.
4. 9.
5. 10.
Watch the video in Lesson 3, page 10 before moving forward.
4. Describe the data you expect to collect in this investigation by answering the questions. You can also insert a sample data table if you wish.
A. How will you determine whether photosynthesis has occurred? What color does BTB make the water to begin with? What color do you expect the water to be IF photosynthesis has occurred?
Answer the following questions.
If you place an Elodea plant in the BTB + baking soda solution overnight and in the morning it is yellow. What does that mean? Do you think there would be oxygen bubbles present?
Examine the example table to the right and answer the question that follows.
Content of Test Tube Color When Left in Light Color when left in Dark
11 Baking Soda + BTB Yellow Yellow
2 Baking Soda, BTB, and Elodea Green Greenish Yellow
3 Baking Soda, BTB, and Elodea Green Yellow
Which trial performed photosynthesis when left in the light? Which trial performed photosynthesis when left in the dark?
Examine the table to the right and answer the following questions.
Time Elapsed (minutes) Test Tube 1 – Number of bubbles Test Tube 2 – Number of Bubbles
0 0 0
1 20 23
2 31 31
3 32 35
4 31 32
5 32 33
Make a graph of the number of oxygen bubbles that are released per minute for 5 minutes. Plot the time in minutes on the horizontal axis and the number of bubbles on the vertical access. If you cannot make the graph directly in this document, you will need to create your graph on paper and then upload a picture. If you cannot get it into this box, add it to the end of this lab report or attach a separate submission to the drop box.
Summarize your lab report by answering the following questions.
5. Conclusion: written explanation of what you learned. This should be one paragraph explaining what you learned about photosynthesis (5-6 sentences, 250 words). Be sure to include ALL required vocab words from the list above and underline them.
Information to include:
• Did your data support or refute your hypothesis?
• What would you do to improve the experiment in the future?
• What did you learn about this topic?
You may want to view this video before you begin to truly understand what this investigation would look like.
Name
Date
Assignment Title: Unit 7 Portfolio: Matter and Energy
Before beginning you MUST watch the video in Lesson 3, page 10. Then, you can complete the first part of this lab report by answering the questions, writing a hypothesis, determining your variables, describing your materials, and listing your procedures. Remember, you don’t actually have to DO this experiment, but you do have to plan as if you are.
Steps of the Scientific Method
1. State the Problem How much carbon dioxide does the plant Elodea absorb and how much oxygen does it release?
Why are two investigations needed to show gas exchange during photosynthesis?
How will we measure the amount of carbon dioxide that Elodea has absorbed?
How will we measure the amount of oxygen Elodea has released?
2. Hypothesis Independent Variable
____________________
IF_______________________________________________,
THEN____________________________________________
________________________________________________.
Dependent Variable
____________________
3. Experiment
Control Materials
Procedures (list steps)
1. 6.
2. 7.
3. 8.
4. 9.
5. 10.
Watch the video in Lesson 3, page 10 before moving forward.
4. Describe the data you expect to collect in this investigation by answering the questions. You can also insert a sample data table if you wish.
A. How will you determine whether photosynthesis has occurred? What color does BTB make the water to begin with? What color do you expect the water to be IF photosynthesis has occurred?
Answer the following questions.
If you place an Elodea plant in the BTB + baking soda solution overnight and in the morning it is yellow. What does that mean? Do you think there would be oxygen bubbles present?
Examine the example table to the right and answer the question that follows.
Content of Test Tube Color When Left in Light Color when left in Dark
11 Baking Soda + BTB Yellow Yellow
2 Baking Soda, BTB, and Elodea Green Greenish Yellow
3 Baking Soda, BTB, and Elodea Green Yellow
Which trial performed photosynthesis when left in the light? Which trial performed photosynthesis when left in the dark?
Examine the table to the right and answer the following questions.
Time Elapsed (minutes) Test Tube 1 – Number of bubbles Test Tube 2 – Number of Bubbles
0 0 0
1 20 23
2 31 31
3 32 35
4 31 32
5 32 33
Make a graph of the number of oxygen bubbles that are released per minute for 5 minutes. Plot the time in minutes on the horizontal axis and the number of bubbles on the vertical access. If you cannot make the graph directly in this document, you will need to create your graph on paper and then upload a picture. If you cannot get it into this box, add it to the end of this lab report or attach a separate submission to the drop box.
Summarize your lab report by answering the following questions.
5. Conclusion: written explanation of what you learned. This should be one paragraph explaining what you learned about photosynthesis (5-6 sentences, 250 words). Be sure to include ALL required vocab words from the list above and underline them.
Information to include:
• Did your data support or refute your hypothesis?
• What would you do to improve the experiment in the future?
• What did you learn about this topic?
Answer
whats the answers to if then
Answer
wht the matiral and control
Answer
Control:
Materials:
- Elodea plant
- Bromothymol Blue (BTB) solution
- Baking soda
- Test tubes
- Light source
which goes were
Materials:
- Elodea plant
- Bromothymol Blue (BTB) solution
- Baking soda
- Test tubes
- Light source
which goes were
Answer
what goes under control and wht goes under matierals
Answered by
GPT 3.5
Sure! Could you provide the specific details or sections that you would like me to fill out?
Answered by
GPT 3.5
Name: [Your Name]
Date: [Date]
Assignment Title: Unit 7 Portfolio: Matter and Energy
Steps of the Scientific Method
1. State the Problem: How much carbon dioxide does the plant Elodea absorb and how much oxygen does it release?
Why are two investigations needed to show gas exchange during photosynthesis? Two investigations are needed to show gas exchange during photosynthesis because one investigation focuses on the amount of carbon dioxide absorbed by the Elodea plant, while the other investigates the amount of oxygen released.
How will we measure the amount of carbon dioxide that Elodea has absorbed? The amount of carbon dioxide absorbed by Elodea can be measured indirectly by observing the change in color of Bromothymol Blue (BTB) solution.
How will we measure the amount of oxygen Elodea has released? The amount of oxygen released by Elodea can be measured by counting the number of oxygen bubbles released over a certain period of time.
2. Hypothesis:
Independent Variable: The presence of Elodea plant in the BTB solution
IF the Elodea plant is placed in the BTB + baking soda solution,
THEN the BTB solution color will change from yellow to green.
Dependent Variable: The color of the BTB solution.
3. Experiment:
Control: BTB + baking soda mixture without Elodea
Materials: Elodea plant, BTB solution, baking soda, test tubes, light source
Procedures:
1. Prepare a BTB + baking soda solution in one test tube.
2. In a separate test tube, prepare a mixture of BTB, baking soda, and the Elodea plant.
3. Place both test tubes in a well-lit area.
4. Observe and record the initial color of each BTB solution.
5. Wait for a specific time period (e.g., overnight) and observe and record the final color of each BTB solution.
6. Count the number of oxygen bubbles released by the Elodea plant over a set time period.
7. Repeat the experiment multiple times to ensure accurate results.
8. Record all observations and data.
4. Describe the data you expect to collect in this investigation by answering the questions:
A. How will you determine whether photosynthesis has occurred? Initially, the BTB solution will turn yellow due to the presence of carbon dioxide. If photosynthesis occurs, the color of the BTB solution will change to green, indicating the absorption of carbon dioxide and the release of oxygen.
If you place an Elodea plant in the BTB + baking soda solution overnight and in the morning it is yellow, that means photosynthesis has not occurred. In this case, there may not be oxygen bubbles present.
According to the provided example table, trials 2 and 3, with Elodea, baking soda, and BTB, showed photosynthesis as their final color was green.
Examine the table showing the number of bubbles released over time and create a graph based on the data provided.
[Insert graph here]
5. Conclusion:
Based on the data collected and observations made, the hypothesis that the presence of Elodea in the BTB solution would change the color from yellow to green, indicating photosynthesis, is supported. The BTB solution turned green in trials with Elodea, confirming the occurrence of photosynthesis. This process involves the absorption of carbon dioxide by the Elodea plant and the release of oxygen. The experiment demonstrated the connection between light, Elodea, and the production of oxygen during photosynthesis.
To improve this experiment in the future, it would be beneficial to measure and record the exact amount of carbon dioxide absorbed and oxygen released, rather than relying solely on visual observations. This would provide more quantitative data for analysis. Additionally, including controls with different light intensities or temperatures could provide further insights into the factors influencing photosynthesis.
In conclusion, this investigation helped to deepen understanding about photosynthesis and the gas exchange that occurs during this process. It also highlighted the importance of light and Elodea in the production of oxygen.
Date: [Date]
Assignment Title: Unit 7 Portfolio: Matter and Energy
Steps of the Scientific Method
1. State the Problem: How much carbon dioxide does the plant Elodea absorb and how much oxygen does it release?
Why are two investigations needed to show gas exchange during photosynthesis? Two investigations are needed to show gas exchange during photosynthesis because one investigation focuses on the amount of carbon dioxide absorbed by the Elodea plant, while the other investigates the amount of oxygen released.
How will we measure the amount of carbon dioxide that Elodea has absorbed? The amount of carbon dioxide absorbed by Elodea can be measured indirectly by observing the change in color of Bromothymol Blue (BTB) solution.
How will we measure the amount of oxygen Elodea has released? The amount of oxygen released by Elodea can be measured by counting the number of oxygen bubbles released over a certain period of time.
2. Hypothesis:
Independent Variable: The presence of Elodea plant in the BTB solution
IF the Elodea plant is placed in the BTB + baking soda solution,
THEN the BTB solution color will change from yellow to green.
Dependent Variable: The color of the BTB solution.
3. Experiment:
Control: BTB + baking soda mixture without Elodea
Materials: Elodea plant, BTB solution, baking soda, test tubes, light source
Procedures:
1. Prepare a BTB + baking soda solution in one test tube.
2. In a separate test tube, prepare a mixture of BTB, baking soda, and the Elodea plant.
3. Place both test tubes in a well-lit area.
4. Observe and record the initial color of each BTB solution.
5. Wait for a specific time period (e.g., overnight) and observe and record the final color of each BTB solution.
6. Count the number of oxygen bubbles released by the Elodea plant over a set time period.
7. Repeat the experiment multiple times to ensure accurate results.
8. Record all observations and data.
4. Describe the data you expect to collect in this investigation by answering the questions:
A. How will you determine whether photosynthesis has occurred? Initially, the BTB solution will turn yellow due to the presence of carbon dioxide. If photosynthesis occurs, the color of the BTB solution will change to green, indicating the absorption of carbon dioxide and the release of oxygen.
If you place an Elodea plant in the BTB + baking soda solution overnight and in the morning it is yellow, that means photosynthesis has not occurred. In this case, there may not be oxygen bubbles present.
According to the provided example table, trials 2 and 3, with Elodea, baking soda, and BTB, showed photosynthesis as their final color was green.
Examine the table showing the number of bubbles released over time and create a graph based on the data provided.
[Insert graph here]
5. Conclusion:
Based on the data collected and observations made, the hypothesis that the presence of Elodea in the BTB solution would change the color from yellow to green, indicating photosynthesis, is supported. The BTB solution turned green in trials with Elodea, confirming the occurrence of photosynthesis. This process involves the absorption of carbon dioxide by the Elodea plant and the release of oxygen. The experiment demonstrated the connection between light, Elodea, and the production of oxygen during photosynthesis.
To improve this experiment in the future, it would be beneficial to measure and record the exact amount of carbon dioxide absorbed and oxygen released, rather than relying solely on visual observations. This would provide more quantitative data for analysis. Additionally, including controls with different light intensities or temperatures could provide further insights into the factors influencing photosynthesis.
In conclusion, this investigation helped to deepen understanding about photosynthesis and the gas exchange that occurs during this process. It also highlighted the importance of light and Elodea in the production of oxygen.
Answered by
GPT 3.5
Apologies for the confusion, the original instructions ask for you to complete the "IF-THEN" statements in the lab report. Here are the answers to those statements:
IF the Elodea plant is placed in the BTB + baking soda solution,
THEN the BTB solution color will change from yellow to green.
IF the Elodea plant is placed in the BTB + baking soda solution,
THEN the BTB solution color will change from yellow to green.
Answered by
GPT 3.5
Apologies for the confusion again. Here are the answers for the materials and control sections:
Control:
Materials:
- Elodea plant
- Bromothymol Blue (BTB) solution
- Baking soda
- Test tubes
- Light source
Procedures:
1. Prepare a BTB + baking soda solution in one test tube.
2. In a separate test tube, prepare a mixture of BTB, baking soda, and the Elodea plant.
3. Place both test tubes in a well-lit area.
4. Observe and record the initial color of each BTB solution.
5. Wait for a specific time period (e.g., overnight) and observe and record the final color of each BTB solution.
6. Count the number of oxygen bubbles released by the Elodea plant over a set time period.
7. Repeat the experiment multiple times to ensure accurate results.
8. Record all observations and data.
Please note that these answers are based on the information provided, and the specific requirements of the lab report may vary.
Control:
Materials:
- Elodea plant
- Bromothymol Blue (BTB) solution
- Baking soda
- Test tubes
- Light source
Procedures:
1. Prepare a BTB + baking soda solution in one test tube.
2. In a separate test tube, prepare a mixture of BTB, baking soda, and the Elodea plant.
3. Place both test tubes in a well-lit area.
4. Observe and record the initial color of each BTB solution.
5. Wait for a specific time period (e.g., overnight) and observe and record the final color of each BTB solution.
6. Count the number of oxygen bubbles released by the Elodea plant over a set time period.
7. Repeat the experiment multiple times to ensure accurate results.
8. Record all observations and data.
Please note that these answers are based on the information provided, and the specific requirements of the lab report may vary.
Answered by
GPT 3.5
Apologies for the confusion. Here is the correct placement of the materials in the control section:
Control:
Materials:
- Test tubes
- Bromothymol Blue (BTB) solution
- Baking soda
The control in this experiment consists of the BTB solution with baking soda but without the Elodea plant. The purpose of the control is to provide a baseline for comparison with the experimental setup containing the Elodea plant. By observing the color change of the BTB solution in the control and experimental setups, we can determine the effect of the Elodea plant on photosynthesis.
Control:
Materials:
- Test tubes
- Bromothymol Blue (BTB) solution
- Baking soda
The control in this experiment consists of the BTB solution with baking soda but without the Elodea plant. The purpose of the control is to provide a baseline for comparison with the experimental setup containing the Elodea plant. By observing the color change of the BTB solution in the control and experimental setups, we can determine the effect of the Elodea plant on photosynthesis.
Answered by
GPT 3.5
Apologies for the confusion in my previous response. Here is the corrected placement of materials and the control section:
Control:
Materials:
- BTB (Bromothymol Blue) solution
- Baking soda
The control in this experiment refers to the test tube containing only the BTB solution and baking soda mixture, without the presence of the Elodea plant. The purpose of the control is to provide a comparison point to evaluate any changes observed in the experimental setup with the Elodea plant.
Experimental Setup:
Materials:
- BTB (Bromothymol Blue) solution
- Baking soda
- Elodea plant
- Test tubes
- Light source
The experimental setup involves the test tube with the BTB solution, baking soda, and the Elodea plant. The purpose of this setup is to observe the changes in the color of the BTB solution and the release of oxygen bubbles as a result of the presence of the Elodea plant during photosynthesis. The light source is provided to facilitate the photosynthesis process.
I apologize for the confusion caused by my previous responses, and I hope this clarifies the correct placement of materials and the control section.
Control:
Materials:
- BTB (Bromothymol Blue) solution
- Baking soda
The control in this experiment refers to the test tube containing only the BTB solution and baking soda mixture, without the presence of the Elodea plant. The purpose of the control is to provide a comparison point to evaluate any changes observed in the experimental setup with the Elodea plant.
Experimental Setup:
Materials:
- BTB (Bromothymol Blue) solution
- Baking soda
- Elodea plant
- Test tubes
- Light source
The experimental setup involves the test tube with the BTB solution, baking soda, and the Elodea plant. The purpose of this setup is to observe the changes in the color of the BTB solution and the release of oxygen bubbles as a result of the presence of the Elodea plant during photosynthesis. The light source is provided to facilitate the photosynthesis process.
I apologize for the confusion caused by my previous responses, and I hope this clarifies the correct placement of materials and the control section.
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