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Chemical Interations

#122 vocab. for 1.1, 1.2,and pg. 78

TermDefinition
Proton Positively charged particle
Neutron Uncharged particle
Nucleus Combination of protons and neutrons in the center of the atom
Electron Negatively charged particles outside the nucleus
Atomic number Number of protons in an atom
Atomic mass number Total number of protons and neutrons in an atom
Isotope Atoms of the same element that have different number of neutrons
Ion An atom that loses or gains electrons
Atomic mass The average mass of all the elements isotopes
Periodic table A table of the elements, that is arranged by their atomic number
Group A vertical row on the periodic table, elements have similar properties
Period A horizontal row on the periodic table, elements properties vary
Law of conservation of mass States that in chemical reactions, atoms are neither created nor destroyed
Created by: BWillis
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