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Minerals – Ch 5 Terms Properties Groups Identification Random 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 The mass of a substance to the volume is its ____ Answer Density Home The ability of a mineral to resist scratching is its _____ Answer Hardness Home Tendency of a mineral to break and form uneven, irregular surfaces Answer Fracture Home An inorganic solid with characteristic chemical composition and physical properties Answer Mineral Home Flourite and feldspar are examples of these Answer Minerals Home The way that light is reflected from a mineral’s surface Answer Luster Home True/False: Chatoyancy means “cat’s eye” and has a silky appearance Answer True Home Daily Double!! What is the color of a mineral in a powdered form? Answer Streak Home What physical property is unreliable as an identification clue for minerals? Answer Color Home What is the tendency of a mineral to split along specific planes, forming flat surfaces? Answer Cleavage Home A solid whose atoms, ions, or molecules are arranged in a regular, repeating pattern Answer Crystal Home What are the 2 main groups of minerals? Answer Silicates or Nonsilicates Home Minerals are usually _____, meaning they do not contain carbon Answer Inorganic Home Mineral that does not contain silicon or oxygen Answer Nonsilicate Home Mineral that contains silicon and oxygen Answer Silicate Home True or False: A mineral that glows in ultraviolet light is phosphorescent Answer False (fluorescent) Home What 2 elements must be present in a silicate? Answer Silicon and Oxygen Home Which type of silicate does each tetrahedron share 3 of its oxygen atoms with other tetrahedra, and the remaining oxygen atoms bond with Al or Mg atoms? Answer Sheet silicates Home If an unstable atomic nuclei decays into stable nuclei, the mineral is ____. Answer Radioactive Home What kind of tetrahedra does NOT link with Silicon or Oxygen atoms? Answer Isolated Tetrahedra Home What is the hardest mineral on the Moh’s hardness scale? Answer Diamond Home What is the softest mineral on the Moh’s hardness scale? Answer Talc Home If a mineral reflects light like a metal it has what kind of luster? Answer Metallic Luster Home Daily Double!! What do you call a tetrahedra that does not link with other Silicon and Oxygen atoms? Answer Isolated Tetrahedra Home What shape does an “asterism” describe? Answer A Star Home