Question

Give one word answers

a) The ratio of the density of the substance to the density of water ( at 4°c)

b) The expansion of water when it is cooled from 4°C to 0°C.


If you know the answer do it ,if you don't know the answer ignore it!​

Answer 1

Answer:-

1. Relative Density.
2. Anomalous expansion of water.

Answer 2

Answer:

( a ) Relative density, or specific gravity

( b ) It expand slightly

Explanation:

( a ) Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water at 4oC.

( b ) When liquid water is cooled, it contracts like one would expect until a temperature of approximately 4 degrees Celsius is reached. After that, it expands slightly until it reaches the freezing point, and then when it freezes it expands by approximately 9%.