what test would you need to perform to prove that it is the combination of glucose in the glucose indicator solution that changes color when heated and not just the glucose or the glucose indicator solution alone. support your anwser with a solution
To determine if it is the combination of glucose in the glucose indicator solution that causes the color change when heated, you can perform a control experiment by testing the glucose and glucose indicator solution separately.
Here's how you can set up the experiment:
1. Preparation:
- Obtain a small sample of glucose.
- Obtain a small sample of the glucose indicator solution.
- Label two separate test tubes as "Glucose" and "Indicator Solution".
2. Testing Glucose:
- Add a few drops of water to the "Glucose" test tube.
- Add a small amount of glucose to the test tube, creating a glucose solution.
- Mix the solution well.
- Heat the test tube with a Bunsen burner or a heating source for a short period of time.
- Observe any color change.
3. Testing Glucose Indicator Solution:
- Add a few drops of the glucose indicator solution to the "Indicator Solution" test tube.
- Heat the test tube with a Bunsen burner or a heating source for a short period of time.
- Observe any color change.
Analysis and Conclusion:
- Compare the results from the two test tubes.
- If both the glucose and indicator solution independently produce a color change when heated, it suggests that both components contribute to the color change.
- However, if only the combination of glucose and indicator solution produces a color change, it indicates that the color change is due to their interaction and not solely caused by glucose or the indicator solution alone.
By conducting this control experiment, you can evaluate the individual contributions of glucose and the glucose indicator solution towards the observed color change when heated.
To confirm that it is the combination of glucose in the glucose indicator solution that changes color when heated, and not the glucose or the indicator solution alone, you can perform the following test:
1. Prepare three test tubes:
- Test tube 1: Glucose solution only
- Test tube 2: Glucose indicator solution only
- Test tube 3: Glucose solution mixed with the glucose indicator solution
2. Label each test tube accordingly.
3. Heat the test tubes using a water bath or Bunsen burner flame. Ensure that the temperature is constant for all test tubes.
4. Observe any color changes in each test tube after heating.
- If only test tube 3 (containing both glucose solution and the glucose indicator solution) exhibits a color change, it indicates that the combination of glucose and the indicator solution is responsible for the color change.
- If test tube 1 (glucose solution only) or test tube 2 (glucose indicator solution only) also show a color change, it suggests that either glucose or the indicator solution alone can cause the color change.
By comparing the results of all three test tubes, you can determine if the presence of glucose in the glucose indicator solution is necessary for the observed color change.