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atom smallest piece of matter that has the same properties of the element that it is in
proton a positive subatomic particle in the atoms nucleus. its the identity of the element and atoms number
neutron a neutral subatomic particle in the atoms nucleus.... it has no charge and holds most of the mass
electron a negative subatomic particle spinning outside the nucleus of an atom. TINY!
element the simplest forms of matter that contain only one type of atoms
periotic table of elements a chart that organizes all the elements by atomic number and properties
valence electron the electron in the outer level of an atom that causes atoms to bond together
chemical bond an interaction that holds two atoms together
electron dot diagram an easy way to show the valence electrons in an atom or chemical bond
compound a set of elements that are chemically bonded and chanegd into new substaces
chemical formula a shorthand way to use chemical symbols and number to represent a substance
subscript h2o small number to the right of the element that shows how many atoms there are of the element
coefficent the large numbers that multiplies atoms of the element 2cl+3na
chemcal equations uses symbols to show the realationship between the reactions and the products c+o2->co2
decomposition reaction a reaction where a single compound breaks down to form two simlar substances
single displacment reaction one element rerplaces another element in compound leaving a new compound and 1 element
double displacment reaction the two metal ions in 2 compounds switch places in a chemical reaction
indicator will change colors in the presence of an acid or a bass.
law of conservation of mass states that matter is niether created nor destroyed in a chemical reaction
Created by: kyra_michelle09