Answer :
In the research question about the effect of increasing temperature on the solubility of copper sulfate, the variables can be defined as follows:
1. Independent Variable:
- The independent variable is the variable that is intentionally changed or manipulated in an experiment. In this case, the independent variable is the temperature. Samip will be altering the temperature to observe its impact on the solubility of copper sulfate.
2. Dependent Variable:
- The dependent variable is the variable that is measured or observed in response to changes in the independent variable. In this scenario, the dependent variable is the solubility of copper sulfate. Samip will be measuring how the solubility of copper sulfate changes as the temperature is increased.
3. Controlled Variable(s):
- Controlled variables are the factors that are kept constant throughout the experiment to ensure that any observed changes in the dependent variable are due to the manipulation of the independent variable. In this study, controlled variables may include:
- Concentration of copper sulfate solution: Keeping the concentration constant will ensure that any changes in solubility are due to temperature variations.
- Stirring/agitation rate: Maintaining a consistent stirring rate will help ensure uniform distribution of heat and solute in the solution.
- Duration of the experiment: Keeping the duration constant will allow for a fair comparison of results across different temperature levels.
By carefully controlling these variables while manipulating temperature and measuring solubility, Samip can conduct a reliable experiment to investigate the relationship between temperature and the solubility of copper sulfate.
