The densities for a few solids are listed below: Plastic 1.15 (g/mL) magnesium 1.74 (g/mL) aluminum 2.70 (g/mL) ice 0.917 (g/mL)
Which object will sink and which will float in chloroform (d = 1.48 g/mL)?

3 1/4 %

explanation:

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.