List five problems caused by thermal expansion of solid, liquid and gas
Answers
Answer:PLS MARK BRAINLIEST,ITS REQUEST
Explanation:1.The material that expands gets “bigger” in terms of length, width, breadth and hence volume and surface area.
2.Expansion happens when inter-atomic distances increase - the atoms themselves are of a fixed and constant size.
3.Mass remains the same, therefore density decreases.
4.Where different materials are joined, it is important to match coefficients of expansion, otherwise buckling happens (e.g. bimetallic strip) or stresses build up which can cause cracking and failure. Fortunately the coefficients of expansion for steel and concrete are similar, otherwise much of modern architecture / civil engineering would not work.
5.For metals, electrical resistance decreases due to the increased distance between atoms and the “spreading out” of the electron cloud surrounding them.
6.For most materials, since the distance between atoms increases, a certain amount of work is done (energy absorbed by the material) which means that forces of attraction between atoms is less - this an have the effect of “softening” the material, making it more “plastic” (able to be shaped by an external force).