Question

D. Answer these questions.
1. Define density and give its SI unit.
2. Does density of a substance depend on
its shape or size? Does it depend on the
material of the substance?
3. Give an activity to find the density of an
irregular solid which is heavier than water
and is insoluble in it.
4. How can you determine the density of a
cork piece using a sinker and a measuring
cylinder?
5. Give an experiment to determine the
density of an oil using a density bottle
6. Define relative density. What is its unit, and
why?
7. How does the density of an object vary
with change in temperature of the object?
8. State the principle of floatation.
9. Give three examples of floating bodies.
10. Arrange the following substances in
ascending order of density:
Cork, iron, hydrogen, air, mercury, water,
gold​

Answer 1

density is mass per unit volume