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Vocab 2.1-2.2

Vocab

TermDefinition
atom: a small particle that is the building block of matter
compound: a substance made of two or more elements that are chemically joined in a specific combination
element: a substance made of only one kind of atom
heterogeneous mixture: a mixture in which two or more substances are evenly mixed, but not bonded together
matter: anything that has mass and takes up space
mixture: matter that can vary in composition
molecule: two or more atoms that are held together by chemical bonds and act as a unit
substance: matter with a composition that is always the same
atomic number: the number of protons in the nucleus of an atom of an element
electron: a negatively charged particle that occupies the space in an atom outside the nucleus
electron cloud: the region surrounding an atom's nucleus where one of more electrons are most likely to be found
ion: an atom that has a charge because it has gained or lost electrons
isotope: one of two or more atoms of an element having the same number of protons, but a different number of neutrons
neutron: an uncharged particle in the nucleus of an atom
nucleus: the region at the center of an atom that contains most of the mass of the atom
proton: a positively charged particle in the nucleus of an atom
Created by: norrijus2555
 

 



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