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unit 1:Matter

QuestionAnswer
matter can thus be defined as anything that has mass and takes up space
physical property is a characteristic that can be observed or measeread without changing the ientity of the substance
chemical property relates to a substance abilty to undergo change that transfrom it itno diffrent substance
extensive property depends on the amount of matter that is present
intensive property do not depend on the amount of present
ductility the ability of substance to be hammered or thined out
malleabilty the ability of substance to be hammered or beateb into sheets
volume a measure of the size of body regoin in three dimension space
compressibility the measure pf how much given volume of the matter when under pressure
density the ratio of the masss of the substance to the volume of the substance
evaporate the change of the substance from a liquid to a gas
sublimitaion the proess in which a solid changes directly into gas
vaporation the prossec by which a liquid or solid changes to gas
element a substance That cannot be seperate or broken down itno simpler substance by chemicals means
compound a substance made up of atoms of two or more diffrent
heterogoneous mixture mixture that are not uniform throught are said to be
homogenous mixture mixtures that uniform in compisition are said to be
atom the smallest unit of an element that maitnains the chemical propeties of that element
atomic emission spectrum The variety of frequencies of electromagnetic radiation (light) seen through a spectroscope that are emitted by electrons as they transition from higher to lower energy levels; unique for each element.
atomic radius one half of the distance bewteen the center of identical atoms that are not bonded together
electromagnetic spectrum all od the frequencies or wavelenghts of electromagnetic radiation
electronegativity a measure of the ability of an atom in a chemical coumpmound to attract electrons
frequency the number of cycle or vibration per unit of time alos the number of waves produces in given amount of time
hyphen notation A way of designing the isotopes of an element using its name (or symbol), a hyphen, and the mass number (example: uranium-238)
ionic radius A measure of the size of an ion of an element in a crystal
ionization energy the prosec of adding or remoiving electrons from atoms or molecules which gives atoms or molecules a net charge
isotope an atom use to express energy equivallent to the amount of wokr done by force of 1 N acting though a distance of 1 M in the direction of force
planck's constant a constant value that relates the energy of a photon of light to its frequency
valence electron an electron that is found in the outmost shell of an atom and that determines the atoms chemical properties
wavelength the ditance from any point on a wave to an identical point of the next wave
Electron configuration
Covalent bond
ionic bond
ion
Lewis dot structure (electron-dot notation)
Octet rule
metallic bond
conductivity
polar
nonpolar
nonpolar
bent
tetrahedral
trigonal planar
linar
valence electrons
formula unit
polyatomic ion
VSEPR theory
Created by: ks334172
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