This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Students new to mineral identification often confuse shiny, dark-colored nonmetallic minerals for ... (Read 24 times)

jazziefee

  • Hero Member
  • *****
  • Posts: 505
on: Jul 16, 2018
Students new to mineral identification often confuse shiny, dark-colored nonmetallic minerals for those minerals with a metallic luster. Explain how streak can be useful for telling these minerals apart.
 
  What will be an ideal response?

Question 2

Two unknown minerals are placed before you for identification. You decide to test each mineral's hardness. Mineral A will scratch a piece of glass. Mineral B will not. Which mineral is harder? How do they compare to the specific hardness of the glass?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dlook33

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: Metallic minerals generally have a dark-colored streak, whereas nonmetallic minerals generally have a light-colored streak.

Answer to Question 2

Answer: Mineral A is harder. Specifically, it is harder than glass (5.5) because it made a scratch. Mineral B is softer than 5.5 because it did not scratch the glass.


jazziefee

  • Member
  • Posts: 505
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

scikid

  • Member
  • Posts: 300
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The strongest synthetic topical retinoid drug available, tazarotene, is used to treat sun-damaged skin, acne, and psoriasis.

Did you know?

The familiar sounds of your heart are made by the heart's valves as they open and close.

Did you know?

The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.

Did you know?

Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

mushroom that glow in the dark mushroom that glow in the dark
Disulfide bonds are yellow; the three chains are colored Disulfide bonds are yellow; the three chains are colored
"Dark Matter" "Dark Matter"
Colored scanning electron micrograph (SEM) of a helper T cell (green) with HIV viruses (red) budding ... Colored scanning electron micrograph (SEM) of a helper T cell (green) with HIV viruses (red) budding ...
A Tough Economy ...for students A Tough Economy ...for students
Which one is more healthier? DARK, MILK or WHITE chocolate Which one is more healthier? DARK, MILK or WHITE chocolate
Video: Brain Anatomy Animation (Part 2 of 2)

For a complete list of videos, visit our video library