Final answer:
The order of density for the four 250 mL beakers filled with different substances, from highest to lowest, is glass marbles, salt, beans, and Styrofoam. This prediction is based on the known properties of each material and their respective masses for the same volume.
Step-by-step explanation:
The student is asking to predict the order of density for four 250 mL beakers filled with different materials: salt, beans, glass marbles, and Styrofoam. To determine the order of density, we should consider the mass and volume of the substances in each beaker. Since they all have the same volume (250 mL), the differences in mass will indicate their relative densities.
Firstly, we know that glass marbles are very dense and will likely have the highest density as they are solid with minimal air space between them. Salt is also dense, but not as much as glass marbles. Next, beans are organic materials and are less dense than glass and salt. Finally, Styrofoam is known for being very lightweight due to its high air content, making it the least dense material in this comparison.
Therefore, the order from highest density to lowest would be: glass marbles, salt, beans, and then Styrofoam. This reasoning is based on the understanding of the physical properties of each material and their respective mass in relation to their volume.