1 What is the correct atomic composition of quartz?A) two oxygen atoms B) two silica atoms C) one silica atom and two oxygen atoms D) two silica atoms and one iron atom 2 When magma cools quickly, __________ crystals form, and when it cools slowly, __________ crystals form.A) shiny, dull B) large, large C) broken, crystals D) small, large 3 What are the common minerals called?A) abundant minerals B) igneous minerals C) crystal minerals D) rock-forming minerals 4 What is an example of an oxide?A) calcite B) hematite C) sulfur D) anhydrite 5 A(n) __________ is a solid in which the atoms are arranged in repeating patterns.A) magma B) rock C) atom D) crystal 6 According to the table, what is a characteristic of metallic minerals? (107.0K) (84.0K)A) colorless streak B) low hardness value C) gray, green, brown, or red streak D) no crystalline structure 7 Which of the following is not a reliable feature to use alone when identifying a mineral?A) crystal form B) luster C) hardness D) color 8 How do crystals of salt form?A) precipitation inside caves B) freezing in glacial ice C) crystallization from magma D) evaporation from solution 9 What happens to calcium carbonate when it is exposed to hydrochloric acid?A) It changes color. B) It fizzes. C) It breaks. D) It looses luster. 10 __________ is the measure of how easily a mineral can be scratched.A) Specific gravity B) Streak C) Hardness D) Luster 11 What describes the way a mineral feels?A) streak B) texture C) luster D) hardness 12 What is the numerical value for the hardest mineral on the Mohs hardness scale?A) 100 B) 20 C) 11 D) 10 13 If a mineral breaks along distinct planes, it is said to have __________.A) fracture B) a high specific gravity C) cleavage D) a dull luster 14 According to the table, which mineral is capable of scratching garnet? (7.0K)A) corundum B) gold C) pyrite D) apatite 15 Which of the minerals listed in the table has the greatest density? (8.0K)A) beryl B) corundum C) pyrite D) garnet 16 _____ describes the way a mineral reflects light.A) colorless streak B) cleavage C) streak D) luster