Geology 100 Staff-Test 9

Answer the questions below and then click "submit" to send your answers.

  1. Compare feldspar and quartz. How do they differ chemically? What type of silicate structure does each have? How would you distinguish them on the basis of cleavage?

    2. Your answer:

  2. What are the three most common elements (by number and approximate percentage) on the Earth’s crust?

    3. Your answer:

  3. A substance that cannot be broken down into other substances by ordinary chemical methods is a(n)

    4. Your answer:
    atom
    element
    molecule
    compound

  4. The subatomic particle that contributes mass and a single positive electrical charge is the

    5. Your answer:
    proton
    neutron
    electros

  5. Atoms containing different numbers of neutrons but the same numbers of protons are called

    6. Your answer:
    compounds
    ions
    elements
    isotopes

  6. Atoms with either a positive or negative charge are called

    7. Your answer:
    compounds
    ions
    elements
    isostopes

  7. The bonding between Cl and Na in halite is

    8. Your answer:
    ionic
    covalent
    metallic
    male

  8. The most common mineral in the Earth’s crust is

    9. Your answer:
    quartz
    feldspar
    pyroxene
    biotite

  9. On Moh’s hardness scale ordinary window glass has a hardness of

    10. Your answer:
    2-3
    3-4
    5-6
    7-8

  10. The ability of a mineral to break along preferred directions is called

    11. Your answer:
    fracture
    crystal form
    hardness
    cleavage