Review Minerals-1

In testing this piece of quartz, I found that it would scratch glass. What property was I testing?

  1. Hardness

    Yes! Hardness is a substance's resistance to being scratched. With a hardness of 7, quartz is hard enough to scratch glass.
  2. Cleavage

    No. Cleavage is the tendency of a mineral to break along planes of weakness to produce pieces with flat, smooth sides. Cleavage involves breaking, not scratching.
  3. Fracture

    No. Fracture is a property of minerals that do NOT break along planes of weakness to produce flat, smooth sides. This involves breaking, not scratching.
  4. Streak

    No. Streak is a test to see the color of a mineral when it is ground into a powder by scratching it on a porcelain streak plate. For streak, we are powdering the mineral, not scratching another substance.



Click to see which state standards this question tests, and which of my videos, experiments, and other resources support that topic.

Florida


SC.4.E.6.2 Identify the physical properties of common earth-forming minerals, including hardness, color, luster, cleavage, and streak color, and recognize the role of minerals in the formation of rocks.
What is a Mineral? video, free
Identifying Minerals video, learnalong
Definition of a Mineral video, free
Minerals Around You text page, learnalong
Review Minerals-1 practice
Review Minerals-2 practice
Review Minerals-3 practice
Review Minerals-4 practice
Review Minerals-5 practice
Review Minerals-6 practice
Review Minerals-7 practice
Review Minerals-8 practice

Utah


UT.8.III.1.b Observe and describe the minerals found in rocks (e.g., shape, color, luster, texture, hardness).
What is a Mineral? video, free
Identifying Minerals video, learnalong
What is a Rock? video, learnalong
Definition of a Mineral video, free
Review Minerals-1 practice
Review Minerals-2 practice
Review Minerals-3 practice
Review Minerals-4 practice
Review Minerals-5 practice
Review Minerals-6 practice
Review Minerals-7 practice
Review Minerals-8 practice

NGSS