Sunday, December 11, 2011

Minerals Quiz






Which of the following statements is false? Formation of table salt:
Question 1 answers
.
Correct Answer:
is an example of solidification of a melt.


Question 2 text   Question 2


Calcite and aragonite minerals that constitute clam shells are examples of which method of mineral formation?
Question 2 answers
Correct Answer:biomineralization


Question 3 text   Question 3


Silicates:
Question 3 answers
Correct Answer:  all of the above.


Question 4 text   Question 4  


Which of the following statements is false? Crystals:
Question 4 answers
Correct Answer:  
are formed by the high-temperature, extremely rapid process known as solid-state diffusion.


Question 5 text   Question 5  


Which of the following is not a mineral?
Question 5 answers
Correct Answer:  Oil, because it's a liquid, not a solid.


Question 6 text   Question 6  


The tendency of a mineral to break and produce smooth, curving shell-shaped surfaces is termed:
Question 6 answers
Correct Answer:  conchoidal fracture.


Question 7 text   Question 7  


There are two physical properties of minerals that both result in smooth, flat surfaces with specific angles between them. The first property is the result of how the mineral forms; the second is the result of breaking a sample of the mineral. These properties are called:
Question 7 answers
Correct Answer:crystal form and cleavage.


Question 8 text   Question 8


Graphite is:
Question 8 answers

Correct Answer:the lead in the pencil you write with.


Question 9 text   Question 9


An unknown mineral scratches glass, has only average specific gravity, and shows no cleavage but does show conchoidal fracture. Which of the following could it be?
Question 9 answers

Correct Answer:quartz


Question 10 text   Question 10  


Which of the following statements is false? Diamonds:
Question 10 answers

  
Correct Answer:  are found in carrot-shaped structures called pegmatites.


Question 11 text   Question 11


The expression "24 karat" must mean that:
Question 11 answers
Correct Answer:  the substance is 100% pure.



Question 12 text   Question 12


When you scrape a mineral along a ceramic plate to observe the color of its powder, you are checking the physical property known as:
Question 12 answers
Correct Answer:streak.


Question 13 text   Question 13  


An unknown mineral sample can be scratched by a copper penny and will scratch the penny. It reacts with dilute hydrochloric acid to produce carbon dioxide gas. Which of the following could it be?
Question 13 answers
Correct Answer: calcite


Question 14 text   Question 14  


Which of the following groups of silicate minerals exhibits a single strong cleavage in one direction?
Question 14 answers
Correct Answer: sheet silicates


Question 15 text   Question 15


Glass is not a mineral because it doesn't have crystal lattice structure.
Correct Answer: True


Question 16 text   Question 16


A geode is filled with anhedral crystals on its walls.
Question 16 answers


Correct Answer: False


Question 17 text   Question 17  


Calcite and halite both have one direction of cleavage.
Question 17 answers

Correct Answer: False


Question 18 text   Question 18


Mica peels apart in parallel sheets because the chemical bonds between sheets are weak and the chemical bonds within sheets are strong.
Question 18 answers
Correct Answer: True


Question 19 text   Question 19  


The energy of various crystals has been shown to “channel the life force” and positively affect humans.
Question 19 answers
Correct Answer: False


Question 20 text   Question 20


Ice crystals form by solidification of a melt.
Question 20 answers

Correct Answer: True


Question 21 text   Question 21  


Minerals can be destroyed by heating them, by dissolving them, by some chemical reactions, or by microbial action.
Question 21 answers
Correct Answer: True


Question 22 text   Question 22  


Pegmatites are rocks composed of extremely fine-grained mineral crystals so it's easy to see the gemstones in them.
Question 22 answers


Correct Answer: False


Question 23 text   Question 23


Color and cleavage are two very useful physical properties used to identify quartz.
Question 23 answers
Correct Answer: False


Question 24 text   Question 24


Gold and copper can both be found as native metals.
Question 24 answers
Correct Answer: True


Question 25 text   Question 25


Facets are simply a jeweler's encouragement of crystal faces.
Question 25 answers
Correct Answer: False


Question 26 text   Question 26  


The Hope Diamond, now in the Smithsonian Institution in Washington, D.C., has exceptional value because in addition to being the subject of legends and curses, it's a rare blue diamond.
Question 26 answers
Correct Answer: True


Question 27 text   Question 27  


Examples of precious stones are diamonds, rubies, sapphires, and emeralds; examples of semi-precious stones are aquamarines, garnets, topaz, and tourmaline.
Question 27 answers
Correct Answer: True


Question 28 text   Question 28


All precious and semi-precious stones must be transparent.
Question 28 answers
Correct Answer: False