Expansion during heating.
mark the incorrect statements.
a)occurs only in solids
b)increases the weight of material
c) decreases the density of material
d)occurs at the same rate of al solids and liquids
Answers
your answer is ..
option *(1)..
because expansion occurs in . solid. liquid as well as in gases.
A) The incorrect sentence is option A because expansion during heating occurs in all kinds of substance. Solid, liquid, and gas expanse when heated. The reason is this, all materials, as you know, are made up of atoms. The kinetic enery of the materials and their atoms move or vibrate more at any temperature above absolute 0 (-273 degree celsius). Thus the atoms take up more space upon heating and the material expands.
The other options are true.
B) A hot material is heavier than the cold one. So it is true.
C) During heating, the molecules expand and they create more distance between them. Thus heating decreases the density of the material.
D) This option is also quite wrong because not all solids and liquids (or gas, per say) expand at the same rate. The reason is this, at same temperature, solid expands the lesser than liquid, and gasses the most.