Where will the least dense liquid be found?
15. Why would 1 kg of lead be less awkward to carry around than 1 kg of feathers?
16. What will happen to a solid object made from matter with a greater density than water when it is dropped into water?
17. How will knowing the density of a substance help you determine whether an object made from that material will float in water?
18. What is the equation for density?
19. What do D, V, and m stand for in the equation for density?
20. The units for density take the form of a mass unit divided by a(n) ______ unit.
21. What are two reasons why density is a useful property for identifying substances?

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