You will also have the opportunity to review how well you answered each question. The mineral topaz scratches the mineral quartz. The mineral fluorite scratches the mineral calcite. Quartz scratches fluorite.
Topaz scratches calcite.
An element has an atomic number of 19. It forms native-state minerals. It is present in the Earth's hardest mineral. It is part of the mineral anhydrite. Minerals with it fizz upon the application of acid.