Chapter 1 - Rocks And Mineral
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What are Rocks?
Rocks are naturally-occuring materials made of solid, nonliving substance called minerals
What are Minerals?
It is a natural occuring homogeneous or compound of homogeneous element with a definite chemical composition (within limits), and highly ordered atomic arrangement (crystalline structure)
Which of the following minerals is a single element ? A.Tourmaline B. Halite C. Diamond D. Pyrite
C. Diamond
Some minerals are single element. Example of this is Diamond. What is that element that is solely present in Diamond?
Carbon
Halite (NaCl) and Pyrite (FeS2) are example of what minerals based on atomic arrangement? A. Single Element B. Simple Combination of Atom C. Complex combination of Atoms.
B. Simple Combination of Atom
Which of the following minerals is an example of complex combinations of atom? A. Obsidian B. Unakite C.Tourmaline D. Basalt
C. Tourmaline
It is the most efficient arrangement of atom that form a crystal shape.
Crystalline Structure
_______ are arrange in specific pattern based on their elemental composition.
Minerals
Halite (NaCl) forms into ______ shapes, while Diamond’s structure is a complex latticework of ______ shapes.
Cube, diamond.
______ is called to the two minerals with identical chemical composition, but entirely different crystalline structure.
Polymorphism.
Which of the following is an example of Polymorphism? A. Pyraite and Halite B. Diamond and Graphite C. Diamond and Halite D. Pyrite and Graphite
B. Diamond and Graphite • they are identical in chemical composition both are pure Carbon (C) but their crystalline form are radically different. Crystalline Form Diamond- have a complex structure framework Graphite - is striated in flat sheets
Crystalline structure defines a mineral’s properties and these properties are ______ indicators use to identify specific minerals
Primary