Question

part b the students conducted a second experiment. they measured 100 ml of water, density 1 g/cm³ and 100 ml of mineral oil, density 0.8 g/cm³. they poured the water into cup a and the oil in to cup b. next they added an ice cube to each cube. all but one statement is a valid conclusion. a ice is more dense than mineral oil. b ice has a density less than 1 g/cm³. c ice and liquid water have the same density but ice is buoyant in water. d if oil and water are combined in one cup, the oil will float on top of the water.

Explanation:

Ice floats on water, so its density is less than that of water ($1\ g/cm^{3}$). Oil has a density of $0.8\ g/cm^{3}$ and is less dense than water, so it will float on water. Ice also floats on oil, meaning ice is less dense than oil. Ice and liquid - water do not have the same density; ice is less dense than liquid water which is why it floats.

Answer:

C. Ice and liquid water have the same density but ice is buoyant in water