Most people think of a crystal as a rare commodity, when in fact most inorganic solid objects are composed of crystals. The reason for this misconception is that most crystals do not exhibit their crystal form: the external form of a mineral that reflects the orderly internal arrangement of its atoms. Whenever a mineral forms without space restrictions, individual crystals with well-formed crystal faces will develop Some crystals, such as those of the mineral quartz, have a very distinctive crystal form that can be helpful in identification. However, most of the time, crystal growth is interrupted because of competition for space, resulting in an intergrown mass of crystals, none of which exhibits crystal form.
- A.Crystals always have a well-formed shape
- B.Minerals are generally composed of crystals.
- C.The atoms of a crystal have an orderly arrangement.
- D.Crystals are always solid and inorganic.
this misconception이 앞에 내용이라고 생각해서 D를 골랐는데 A인 이유가 궁금합니다.