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science vocabulary

TermDefinition
Model an example, comparison, or imitation of something or someone
Atom The atom is a basic unit of matter that consists of a dense central nucleus surrounded by a cloud of negatively charged electrons
nucleus The center core of the atom that has positive charge
proton A positively charged particle
neutron A neutral particle
electron A negatively charged particle
atomic number The definition of an atomic number is the number of protons in the nucleus of an atom of an element.
Atomic symbol Consist of a letter abbreviation fir the element and coordinating numbers
subatomic Any of various units of matter below the size of an atom, including the elementary particles and hadrons
molecule A quantity of a substance, the weight of which measured in any chosen unit, is numerically equal
lewis structures A Lewis structure is a structural representation of a molecule where dots are used to show electron position around the atoms and lines or dot pairs represent covalent bonds between atoms.
bohr model atomic structure and radiation. Bohr discovered that electrons orbit the nucleus of an atom at set distances, His concepts were fundamental to the later development of quantum mechanics.
electron shell an electron shell, also called a principal energy level may be thought of as an orbit followed by electrons around an atom's nucleus.
valence electron an electron of an atom, located in the outermost shell (valence shell) of the atom, that can be transferred to or shared with another atom.
matter the substance or substances of which any physical object consists or is composed
Created by: Christina.riles
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