Question

observe the picture and answer the following questions a) what is name of this effect b) out of sodium chloride and znsuphide which will have this effect
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Answer 1

Answer:

Explanation:

Density = Mass/Volume

When a substance is heated its volume increases and so the density decreases. In solids, increase in volume is negligible and hence decrease in density too. In liquids and gases, as the temperature increases, volume increases and therefore density decreases considerably.