Chapter 1, Problem 4STP

Interpretation Introduction

Interpretation:

The result of the scientific method used by the student is to be determined.

Concept introduction:

Carbonated beverages include carbon dioxide dissolved in water. It is due to this gas that there are bubbles are fizzing in the liquid.

Answer to Problem 4STP

Correct answer: Option (d)

Explanation of Solution

Option (d)

The hypothesis should be thrown out as it is in contradict to the results of the experiment. The hypothesis depicts that at higher temperatures, greater amounts of carbon dioxide gas is dissolved in a liquid. Whereas, it is the opposite because the greater amount of carbon dioxide gas is dissolved at lower temperatures. Thus, this is the correct option.

Conclusion

Option (a)

No, the hypothesis is not supported by the experimental data as the results are contradictory. Thus, this is an incorrect option.

Option (b)

The observation is not true as the taste of the carbonated beverages is fizzier when they are cold as compared to when they are warm because at the lower temperatures, the amount of carbon dioxide dissolved is greater. Thus, this is an incorrect option.

Option (c)

No, the experiment is neatly planned as the student has taken the same carbonated beverages at different temperatures to study the amount of carbon dioxide in each one of them. Thus, this is an incorrect option.