Are this answers right?(13 points)
Which statement best describes the arrangement of silicon-oxygen tetrahedra in clay minerals?
A.random
B.sheets(answer)
c.spherical
d.tightly packed
(2)What is the main difference between sulfate minerals and sulfide minerals?
A
Sulfates lack sulfur compounds, whereas sulfides contain sulfur compounds.
B
Sulfates contain sulfur-oxygen compounds, whereas sulfides contain sulfur-metal compounds.
C
Sulfates contain sulfur-carbon compounds, whereas sulfides contain sulfur-oxygen compounds.(answer)
D
Sulfates contain sulfur compounds, whereas sulfides lack sulfur compounds.
(3)Carbon varies greatly as a mineral. It can form minerals as different as graphite and diamond.
1Points
Which descriptions explains carbon's versatility?
Select the 2 correct answers.
A
Due to its atomic structure of four valence electrons, carbon can combine easily with other elements.
B (answer)
Carbon's versatility is due to the specific conditions where it is found - temperature, pressure, and the presence of other silicate minerals with which it joins.
C
Carbon's ability to be weak or strong in different compounds is due to the number of valence electrons it shares.
D
Carbon always gives up all of its valence electrons, forming strong hydrogen bonds.(answer)