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 58 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
Wow, this really help

jordangronback

  • Member
  • Posts: 339
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Did you know?

If you could remove all of your skin, it would weigh up to 5 pounds.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye Much of the dark space between stars, as seen in the sky of the image above, is due to the human eye
The Hartlaub's Duck (Pteronetta hartlaubii) is a dark chestnut-coloured duck of African forests The Hartlaub's Duck (Pteronetta hartlaubii) is a dark chestnut-coloured duck of African forests
The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us The frontal sinus, an airfilled space just behind the brow, is a unique size and shape in each of us
Does This Lady Have Two Different Colored Eyes? Does This Lady Have Two Different Colored Eyes?
Resources from Rocks and Minerals Resources from Rocks and Minerals
The percentage of Canadian students in Grades 7 through 12 who used drugs The percentage of Canadian students in Grades 7 through 12 who used drugs
Video: Lipid digestion - mouth, stomach and small intestine

For a complete list of videos, visit our video library