a student wanted to investigate whether or not the temperature of the water would affect the solubility of sugar she had three glasses of water each with 200 ml of water in them one was at 10 c the second a 25c and the third one was at 40 c she found that the warmer water dissolve more sugar what are the dependent and independent variables
amount dissolved (solubility) DEPENDS on temperature
To determine the dependent and independent variables in this experiment, we need to understand their definitions in the context of the investigation.
Independent Variable: The independent variable is the factor that the experimenter manipulates or changes intentionally to observe its effect on the dependent variable. In this case, the independent variable is the temperature of the water. The student deliberately changed the temperature to three different levels: 10°C, 25°C, and 40°C.
Dependent Variable: The dependent variable is the factor that is being measured or observed as the outcome of the experiment. It responds to changes in the independent variable. In this investigation, the dependent variable is the solubility of sugar in water. The student measured the amount of sugar that dissolved in each glass of water.
Therefore, in this experiment:
- Independent variable: Temperature of the water (10°C, 25°C, and 40°C).
- Dependent variable: Solubility of sugar (amount of sugar dissolved).
By manipulating the independent variable (temperature) and observing the changes in the dependent variable (solubility), the student can determine the effect of temperature on the solubility of sugar in water.