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MDCAT
Chemistry
2011

Chemistry · States of Matter - Gases, Liquids and Solids

Work through this past-paper style MCQ, then read the full explanation. Practice more chemistry questions on mMCQ with adaptive practice and topic analytics.

Question

Which of the following statements is true for Amorphous solids?  

Options
  • A

    They possess symmetry

  • B

    They are isotropic

  • C

    They are anisotropic

  • D

    They cleave along a particular direction

  • E

    They have a definite shape

Explanation

Amorphous solids are isotropic because their lack of long-range order results in uniform physical properties in all directions. This is in contrast to crystalline solids, which are anisotropic due to their orderly atomic structure. Amorphous solids do not possess symmetry and cannot cleave along particular planes because their particles are randomly arranged. Additionally, they do not exhibit a definite shape as their molecular structure does not form a regular lattice.

Amorphous solids lack symmetry because their atomic arrangement is irregular, unlike crystalline solids which have a symmetrical, orderly pattern.

Amorphous solids are isotropic, meaning they have uniform properties in all directions due to their irregular atomic arrangement, lacking long-range order.

Anisotropic materials, like crystalline solids, have direction-dependent properties, which is not the case for amorphous solids.

Cleavage along specific directions is characteristic of crystalline solids due to their ordered structure. Amorphous solids break irregularly because of their random atomic arrangement.

Amorphous solids do not have a definite shape or form since their atoms are not arranged in a fixed, repeating pattern.

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Tagged under Chemistry · States of Matter - Gases, Liquids and Solids · 2011