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Where will the least dense liquid be found?

14. 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?

Answer

  1. The least dense liquid will be found at the top when different liquids are layered.

  2. 1 kg of lead is less awkward to carry around than 1 kg of feathers because lead is denser and takes up less space, making it more compact and easier to handle.

  3. A solid object made from matter with a greater density than water will sink when it is dropped into water.

  4. Knowing the density of a substance helps determine whether an object made from that material will float in water because if the density is less than that of water, the object will float; if it is more, the object will sink.

  5. The equation for density is D = m/V, where D is density, m is mass, and V is volume.

  6. In the equation for density, D stands for density, V stands for volume, and m stands for mass.

  7. The units for density take the form of a mass unit divided by a(n) volume unit.

  8. Two reasons why density is a useful property for identifying substances are:

    1. Density is a characteristic property of a substance, meaning it is unique to each substance and can help distinguish it from others.
    2. Density can help predict how substances will interact, such as whether they will float or sink in a fluid.

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