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3rd Nine Weeks Exam
OL Review
Term | Definition |
---|---|
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. |