What causes a material to be a solid object, and why does it not reform after it has been divided?

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For example: what causes aluminum foil to be a solid sheet, but by cutting it in half they cannot be brought back together.

In: Chemistry

Anonymous 0 Comments

It’s because of bond between atoms or molecules that form the substance. Stronger bond like metal, cristalline or covalent bond are stronger and less flexible so substance appears solid. Otherwise weak bond as ionc or electrostatic ones like in water make molecules free to move and make substance appears liquid o gas.