Interpretation:
The independent variable in the experiment needs 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. Independent variable is a variable whose variation does not depend on another variation.
Answer to Problem 5STP
Correct answer: Option (a)
Explanation of Solution
Option (a)
The number of samples tested is an independent variable as it is neither mentioned in the experiment nor the presence of more or less samples is neither affected by nor affects the other variable. Thus, this is the correct option.
Option (b)
It cannot be an independent variable in this experiment as it is dependent on the temperature. Thus, this is an incorrect option.
Option (c)
It is not an independent variable as the type of beverage used is carbonated to observe the amount of carbon dioxide at different temperatures. Thus, this is an incorrect option.
Option (d)
It is not an independent variable as it is affecting the amount of carbon dioxide dissolved in the beverage. Thus, this is an incorrect option.
Chapter 1 Solutions
Chemistry: Matter and Change
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