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rocks and minerals
rocks and minerals
30
Science
9th Grade
09/12/2011

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Term
atom
Definition
smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction; the number of protons determines the identity of the element.
Term
element
Definition
one of a class of substances that cannot be separated into simpler substances by chemical means. See also chart under periodic table
Term
atomic number
Definition
the number at the top on an element block in the periodic table
Term
atomic mass
Definition
the number towards the bottom on the element block in the periodic table
Term
proton
Definition
positively charged elementary particle that is a fundamental constituent of all atomic nuclei. It is the lightest and most stable baryon, having a charge equal in magnitude to that of the electron
Term
neutron
Definition
elementary particle having no charge, mass slightly greater than that of a proton,
Term
electron
Definition
an elementary particle that is a fundamental constituent of matter, having a negative charge
Term
isotope
Definition
two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights.
Term
ion
Definition
electrically charged particles formed in a gas by electric discharge or the like
Term
ionic bond
Definition
electrostatic bond between two ions formed through the transfer of one or more electrons
Term
Covalent Bond
Definition
bond formed by the sharing of a pair of electrons by two atoms.
Term
mineral
Definition
any substance that occurs in nature , usually inorganic
Term
ways to test a mineral
Definition
you scratch it with your fingernial or a nail , scratch it on glass , scratch it on paper , see if it is shiny , look to see if it would break even , feel the texture , how would the edges feel if broken , decribe what colors you see
Term
Carbonates
Definition
a salt or ester of a cabonate acid
Term
Sulfates/Sulfides
Definition
salt or ester of sulfuric acid , compound of sulfur with a more electropositive element or, less often, a group
Term
Halides
Definition
chemical compound in which one of the elements is a halogen
Term
native elements
Definition
Any of 20 elements, such as copper, gold, and silver, which occur naturally uncombined in a nongaseous state; there are three groups—metals, semimetals, and nonmetals
Term
oxides
Definition
compound in which oxygen is bonded to one or more electropositive atoms
Term
silicates
Definition
any salt derived from the silicic acids or from silica.
Term
rock
Definition
mineral matter of variable composition, consolidated or unconsolidated,
Term
sedimentary rock formation
Definition
begins with igneous, metamorphic, or other sedimentary rocks. When these rocks are exposed at the earth’s surface they begin the long slow but relentless process of becoming sedimentary rock
Term
chemical vs. clastic sedimentary rock
Definition
Clastic rocks are made up of particles of pre-existing rocks and minerals , chemical rocks are made of mineral crystals , made from elements that are dissolved in water .
Term
Compaction and Cementation
Definition
changes sediment into sedimentary rock
Term
Metamorphic Rock Formation
Definition
is formed from sedimentary, igneous , or metamorphic rock whose texture , structure or composition has changed do to heat or pressure
Term
foliated vs. nonfoliated
Definition
foliation is the layered rock and nonfoliation is quartzite and marble do not display the banding or layering that are present in foliated rocks
Term
igneous rock formation
Definition
happen when sedimentary rocks are remelted
Term
Intrusive vs. Extrusive Igneous Rock
Definition
intrusive is formed below the srface and extrusive is formed above the surface
Term
Contact Metamorphism
Definition
when the texture of a body of a rock are changed by exposure to the pressure and extreme tempature
Term
regional metamorphism
Definition
texture of rocks are changed over a wide area by deep burial and heating
Term
magma vs. lava
Definition
magma is still underground and lava is when it comes out of the volcano
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