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 67 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
Excellent

kilada

  • Member
  • Posts: 311
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Plant Identification Chart Plant Identification Chart
Students in class Students in class
On average, students in Roman Catholic schools score higher on national tests than students in ... On average, students in Roman Catholic schools score higher on national tests than students in ...
Students and Money Students and Money
Drinking Alcohol use by college students Drinking Alcohol use by college students
The Impact of Cross-Ethnic Friendships on Minority Students’ Well-Being The Impact of Cross-Ethnic Friendships on Minority Students’ Well-Being
Video: Otitis Media

For a complete list of videos, visit our video library