In a controlled experiment, either the amount of baking soda or vinegar can be changed. The choice should depend on the specific objective and hypothesis of the investigation. Consider factors such as the effect on the rate of reaction or gas production when deciding which variable to manipulate.
In a controlled experiment, where only one variable can be changed at a time, it is important to carefully choose which variable to manipulate. In this case, the investigation involves the use of baking soda and vinegar. The two variables that can be changed are the amount of baking soda and the amount of vinegar.
To decide whether to change the amount of baking soda or vinegar, it is crucial to consider the purpose and goal of the investigation. One should choose the variable that is most likely to have a significant impact on the outcome of the experiment and aligns with the research question or hypothesis.
For example, if the research question is focused on the effect of the reactants' concentrations on the rate of reaction, it would be appropriate to change the amount of either baking soda or vinegar. By altering the concentration of one of the reactants, the rate of the reaction can be observed and analyzed.
If the investigation aims to examine the effect of the amount of gas produced in the reaction, it would be more suitable to change the amount of baking soda. This is because baking soda is the source of carbon dioxide gas in the reaction with vinegar. By varying the amount of baking soda, one can observe the corresponding changes in the gas production.
Ultimately, the choice between changing the amount of baking soda or vinegar depends on the specific objective and hypothesis of the investigation. It is important to carefully consider the desired outcome and the relationship between the variables before making a decision.