광물(minerals)
Mineral: a solid inorganic substance that is naturally formed in nature. -Inorganic substance: 무기물 Minerals have crystal structures. -Crystal structure: 결정구조 Minerals can be identified and classified according to their physical properties: Color (겉보기 색) -장석, 석영은 밝고 흑운모, 각섬석, 휘석, 감람석은 어둡다. Streak (조흔색): Scientists scrape a mineral against a white tile(조흔판) to produce a chalky(하얀) line, called a s..
AP & SAT Science
2020. 5. 14. 09:03
