Question

Explain why a metol bar expands when it
heated?​

Answer 1

Answer:

all Metals expand when heated become Elongation of metal bonds due to higher frequency of vibration of Metal atoms

Explanation:

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Answer 2

When a material is heated, the kinetic energy of that material increases and its atoms and molecules move about more. This means that each atom will take up more space due to its movement so the material will expand. ... Some metals expand more than others due to differences in the forces between the atoms / molecules.




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