1- Diamond and quartz are both minerals composed of a single element Ture False

Question

1- Diamond and quartz are both minerals composed of a single element

Ture

False

2- Calcite ( CaCO3), halite (NaCl), and pyrite (FeS2) are all:

a) Carbonate minerals

b) Nonsilicate minerals

c) Covalent minerals

d)Sheet silicate minerals

3- Jewelers often transform raw, uncut mineral crystals into cut gemstones. The smooth faces of the cut gemstone are different from the original crystal faces. What physical property are the jewelers taking advantage of when they fashion uncut crystals into gems?

a) Hardness

b) Fracture

c) Crystal form

d) Cleavage

4- Isotopes of the same element have the same mass number

True

False

5- Silicate minerals are defined as minerals that:

a) Have a 2:1 ratio of oxygen to silicon

b) Have a crystal structure like that of quartz (Sio2 )

c) Consist exclusively of silicon and oxygen

d) Consist of silicon and oxygen bonded to each other and in most cases to metallic inos as well

6- The building blocks of silicate minerals are:

a) Silica ions

b) Silicate tetrahedra

c) Silica crystals

d) Silicon atoms   

Explanation / Answer

1.False. Diamond is composed of carbon element and quartz is composed of silicondioxide (SIO2).

2.Non silicate minerals. Calcite is carbonate, halite is chloride and pyrite is sulphide mineral.

3.cleavage. It's a property which defines weak plane where fracturing is possible but no loss of cohesion so jewelers need to identify the gem variety and its cleavage properties to make it beautiful crystal by cutting it in cleavage planes.

4.False. Isotopes are elements having same atomic number and different atomic masses.

5.consist of silicon and oxygen bonded to each other and in most cases to metallic ions as well.

6.silicate tetrahedra. SIO4.

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.