Question

A. Fill in the blanks

1. When heat is liberated by matter the energy of its molecules _______ and they come closer.

2. Kerosene will float over in water because its density is ______ than that of water.

3.The relative density has units ________

4. 1gcm-3= ______ kg m-3

5. The mass per unit volume termed as ______​

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

1. Decreases.                                                                                                                               2. low .                                                                                                                                              3.   relative density has no units.                                                                                               4.1000 kilogram/cubic                                                                                                                  5.  density.                                                                                                                                                  

Explanation:

3.The S.I unit of density is kg/m3. The relative density is defined as the ratio of the substance to the ratio of the reference substance. The unit on both numerator and denominator are the same. So relative density is a unitless property.                                                                                                                                                               4. 1 g/cm3 is equal to 1000 kilogram/cubic meter. To convert 100 gram into kg then divide it by 1000 i.e. 100/1000 = 0.1 kg. To convert any value of gm/cm3 into kg/m3 then multiply it by 1000.                                                                                       5. It is very well known that mass per unit volume is defined as density.