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EOC Vocabulary Word Scramble

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Science Vocab 147928

Word	Definitions
stable element	An element with a full valence shell (outer energy level).
valence shell (level)	Highest energy level containing electrons.
ionization energy	The energy needed to remove an electron from an atom.
electronegativity	An atom's "need" for another electron (in order to become stable).
alkali metals	Group 1 of the periodic table; are very reactive and create 1+ ions.
ion	An atom that has gained or lost an electron and become positively or negatively charged.
cations	positive ions (atoms with less electrons)
alkaline earth metals	Group 2 on periodic table. They are reactive and form ions with a 2+ charge.
transition metals	Groups 3-12 on the periodic table.
halogens	Group 17 on the periodic table. They are the most reactive nonmetal elements and form 1- ions.
noble gases	Group 18 on the periodic table. They have a full outer energy level and are stable/ nonreactive elements.
ionic bonds	Formed by the transfer of electrons. Compounds formed this way are strong, have high melting points, are usually solid and crystallized.
covalent bonds	Formed by the sharing of electrons. Compunds formed are from non-metals, have low melting points.
molecules	Formed by covalently bonded elements.
polar molecules	Molecules with a partially positive and negative poles.
anions	Negative ions. Atoms with more electrons.