Final answer:
Adding more water during the mixing of gypsum will result in a more diluted mixture, which may affect the final properties of the study model.
Step-by-step explanation:
Adding more water during the mixing of gypsum will result in a more diluted mixture. Gypsum is a mineral that can be mixed with water to form a paste, which is then used to make study models in dentistry. If more water is added, the paste will become thinner and less viscous, which may affect the final properties of the study model.