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Terms

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Transmission electron microscope
an electron microscope that transmits a beam through a specimen, detecting its electrons and forming a highly magnified image on a screen
deductive reasoning
reasoning from general to detail
Nanometer
one billionth of a meter
Compound
composed of two or more parts, elements, or ingredients
Valanced electrons
electrons in the outer shell that like to bond or pair with other electrons
Proton
a positively charged elementary particle that is a fundamental constituent of all atomic nuclei.
Matter
Something that occupies space and can be perceived by one or more senses; a physical body, a physical substance, or the universe as a whole.
Tetrahedron
a solid contained by four plane faces; a triangular pyramid
technology
The application of science, especially to industrial or commercial objectives
Atomic #
the number of positive charges or protons in the nucleus of an atom of a given element, and therefore also the number of electrons normally surrounding the nucleus
Element
one of a class of substances that cannot be separated into simpler substances by chemical means
inductive reasoning
reasoning from detailed facts to general principles
Double Bond
a chemical linkage consisting of two covalent bonds between two atoms of a molecule, represented in chemical formulas by two lines, two dots, or four dots
Scanning electron microscope
a device in which the specimen is examined point by point directly in a moving electron beam, and electrons reflected by the specimen are used to form a magnified, three-dimensional image on a television screen
Structural Formula
a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H-O-H
Salt
a nonmetal and a metal compound
Atom
the 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
Electron shell
a grouping of electrons surrounding the nucleus of an atom; "the chemical properties of an atom are determined by the outermost electron shell"
Nuetron
an elementary particle having no charge, mass slightly greater than that of a proton
Covalent Bond
the bond formed by the sharing of a pair of electrons by two atoms.
Electron
an elementary particle with negative charge
Molecule
the smallest physical unit of an element or compound, consisting of one or more like atoms in an element and two or more different atoms in a compound
Ion
an electrically charged atom or group of atoms formed by the loss or gain of one or more electrons, as a cation (positive ion), which is created by electron loss and is attracted to the cathode in electrolysis, or as an anion (negative ion)
Micrometer
a metric unit of length equal to one millionth of a meter
Ionic bond
the electrostatic bond between two ions formed through the transfer of one or more electrons....metal and metal bond

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