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3rd Nine Weeks Exam

OL Review

TermDefinition
Convergent boundary A tectonic boundary where two plates are moving toward each other.
Divergent boundary A tectonic boundary where two plates are moving away from each other and new crust is forming from magma that rises to the Earth's surface between the two plates.
Transform boundary A transform boundary is a fault zone where two plates slide past each other horizontally.
Oceanic crust The relatively thin part of the earth's crust that underlies the ocean basins.
Continental crust The relatively thick part of the earth's crust that forms the large landmasses. It is generally older and more complex than the oceanic crust.
Element Matter that is made up of only one type of atom.
Pure Substance Matter that is made of the same element or compounds.
Compound Molecules that are made from different types of atoms, BUT always combined in the same proportions.
Chemical Symbol An abbreviation or short representation of a chemical element
Periodic Table of Elements A table of elements, arranged by atomic number, that shows the patterns in their properties.
Metal A solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity
Nonmetal An element or substance that is not a metal.
Metalloid An element whose properties are between those of metals and nonmetals.
Ductile The ability to be drawn out into a thin wire.
Luster Refers to the way an objects surface reflects light.
Conductivity The degree to which a specified material conducts electricity.
Malleability Refers to the way most metals can be hammered or rolled into thin sheets.
Physical Property Is a characteristic of matter that may be observed and measured without changing the chemical identity of the object.
Chemical property Is a characteristic or behavior of a substance that may be observed when it undergoes a chemical change or reaction.
Chemical change A usually irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance.
GHS Labels Presents important information about the chemical hazards in your workplace.
SDS A document that lists information relating to occupational safety and health for the use of various substances and products.
Created by: DDenney