In this experiment, we are investigating the effect of temperature on the time it takes for salt to dissolve in water.
Independent Variable: The independent variable is the one that is changed or controlled in a scientific experiment to test its effects on the dependent variable. In this case, the independent variable is temperature. By changing the temperature of the water, we can observe how it affects the dissolution rate of the salt.
Dependent Variable: The dependent variable is the factor that is measured or observed in response to changes in the independent variable. Here, the dependent variable is the time it takes for the salt to dissolve. This is what we will be measuring to see how it varies with different temperatures.
Control Variables: Control variables are the factors that need to be kept constant to ensure a fair test. In this experiment, control variables might include the amount of salt used, the volume of water, the type of salt, and the stirring speed. Keeping these factors constant will help ensure that any changes in dissolution time can be attributed solely to the changes in temperature.