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Vocabulary Set #5

QuestionAnswer
Atomic Number The number of protons in an atom’s nucleus
Atomic Mass (Mass Number in your book) The sum of the protons and neutrons in an elements nucleus.
Compound A substance that is composed of atoms from two or more different elements that are chemically combined.
Physical Change A change in matter that does not alter the molecular composition. The same compound is present before and after.
Chemical Change a reaction that results in the altering of the molecular composition and produces new compounds.
Elemental Family The columns of the periodic table, these families have similar chemical and physical properties and also react similarly.
Elemental Period The rows on the periodic table that are ordered in recurring trends.
Mixture A combination of two or more components that retain their identities; the components can be easily separated from one another.
Ionization The separation of a compound into ions when in solution.
Atomic Nuclei The dense region in the center of an atom that consists of protons and neutrons.
Electromagnetism A strong attraction that is produced by electric charges; the charges that hold the nucleus of an atom together.
Created by: jshowerman
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