Which of these best describes the scientific process

Explain what happens at the saturation point when adding salt to water at room temperature.

Will a solution form when the solvent and solute are both nonpolar? a. not likely b. never c. most likely

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.