Q. Why has rain water such an unpleasant smell, when it is collected in a rain water tub or tank?
A. Because it is impregnated with decomposed organic matter, washed from roofs, trees, or the casks in which it is collected.
Q. Why does water melt sugar?
A. Because very minute particles of water insinuate themselves into the pores of the sugar, and force the crystals apart from each other.
Q. Why does water melt salt?
A. Because very minute particles of water insinuate themselves into the pores of the salt, and force the crystals apart from each other.
Q. Why does melted sugar or salt give a flavour to the water?
A. Because the sugar or salt (being disunited into very minute pieces) floats about the water, and mixes with every part.
Q. Why does hot water melt sugar and salt quicker than cold water?
A. 1st—Because the heat of the water entering the pores of the sugar or salt, opens a passage for the water: and