PHSC 211 Chapter 1 Quiz (Fall 2020)– Liberty University (A grade) | Elements of Earth Science

PHSC 211 Chapter 1 Quiz (Fall 2020)– Liberty University (A grade) 1. All the following properties of minerals are used for identification except ____________. a. streak b. luster c. hardness d. melting point 2. Quartz can scratch all of the following except ____________. a. glass b. calcite c. topaz d. nail 3. A naturally occurring inorganic substance with a definite chemical composition is a ____________. a. rock b. mineral c. table salt d. charcoal 4. Having 3 planes of cleavage is an identifying property of which mineral(s)? a. Galena b. Calcite c. Halite d. All of the above 5. Metallic minerals are all ____________. a. opaque c. waxy c. dull d. resinous 6. The way light reflects off a mineral’s surface is referred to as its ____________. a. hardness b. texture c. luster d. streak 7. If a mineral is permitted to grow unhindered during its formation, the resulting shape will always be its ____________. a. cleavage b. fracture c. crystal form d. b and c 8. All magnetic minerals are also ____________. a. nonmetallic b. metallic c. vitreous d. dull 9. The tool used to determine the color of the powder of mineral is a ____________. a. streak plate b. glass plate c. compass d. bottle of weak acid 10. A mineral that can scratch a nail but that cannot scratch glass is ____________. a. calcite b. quartz c. gypsum d. apatite 11. Which mineral is metallic? a. Calcite b. Quartz c. Hematite d. Fluorite 12. The cubic shape identifies a mineral that has ____________. a. 3 planes of cleavage b. cleavage planes intersecting at 90° c. an absence of fracture surfaces d. All of the above 13. The mineral quartz is ____________. a. the most abundant mineral in the earth’s crust b. metallic c. scratched by a nail d. harder than a diamond 14. A unique property of what mineral is double refraction? a. Dolomite b. Pyrite c. Augite d. Calcite 15. The following statements are true of all metallic minerals except which? a. They have a dark streak. b. They are opaque. c. They contain a metal. d. They evidence the property of magnetism. 16. All of the following are minerals except which? ____________. a. Gold b. Silver c. Quartz d. Coal 17. The minerals dolomite and calcite are best distinguished from one another by ____________. a. an acid test b. cleavage c. color d. crystal shape 18. Gold settles to the bottom of a miner’s pan because of its a. color b. cleavage c. crystal shape d. high specific gravity 19. Any object with a specific gravity of less than 1 will ____________. a. sink b. float c. turn color d. exhibit fracture 20. Minerals that have the element ____________ in their chemical composition may have an odor akin to that of rotten eggs. a. silicon b. sodium c. chlorine d. sulfur Lab Samples: Answer the following questions using the information in the student chart for mineral Samples A-L. 21. The cleavage of Sample K is ____________. a. 3 planes at 90° b. 3 planes not at 90° c. 1 plane of cleavage d. conchoidal fracture 22. Which sample has 1 plane of cleavage? a. Sample A b. Sample C c. Sample J d. Both b and c 23. Which sample effervesces with acid? a. Sample A b. Sample L c. Sample I d. Sample D 24. Which is true of Samples G and L? a. Their specific gravity is very light. b. They have a nonmetallic luster. c. They have a metallic luster. d. They effervesce with weak acid. 25. Which is true of Sample E? a. It cannot be scratched with a fingernail. b. It can be scratched with a fingernail. c. It can scratch glass. d. It is magnetic. 26. Which sample exhibits fracture? a. Sample J b. Sample B c. Sample D d. Sample H 27. The crystal form of Sample H is the same as that of ____________. a. Sample I b. Sample J c. Sample K d. Sample B 28. Samples J and C both have ____________. a. 3 planes of cleavage b. a pearly luster c. a heavy specific gravity d. a metallic luster 29. Which sample affects the movement of a compass needle? a. Sample L b. Sample J c. Sample K d. Sample B 30. Which sample will have 2 planes of cleavage at 90°? a. Sample I b. Sample J c. Sample K d. Sample B True / False 31. The gas released when weak acid reacts with calcite is oxygen. a. True b. False 32. All magnetic minerals will have the element iron in their chemical composition. a. True b. False 33. The largest commercial use of the mineral halite is table salt. a. True b. False 34. The fingernail can scratch the mineral calcite. a. True b. False 35. The mineral scale of hardness was named after the famous scientist Von Verner. a. True b. False 36. Crystal shape refers to how a mineral breaks. a. True b. False 37. Halite has three plans of cleavage at 90°. a. True b. False 38. Biotite and muscovite have 1 plane of cleavage in common. a. True b. False 39. The specific gravity of the mineral is estimated by moving the mineral from hand to hand. a. True b. False 40. The mineral talc is 1 on Mohs scale of hardness and has a soapy feel to it. a. True b. False 41. Why is color not the best identifying characteristic for a mineral? Color it is the least reliable method of identifying minerals because weather and impurities can change their color.