Review for Semester 2 Final

Elements in the same COLUMN on the periodic table have the same...

• chemical behavior

• number of electrons

• energy levels

• atomic mass

Elements in the same ROW on the periodic table have the same...

• chemical behavior

• number of electrons

• energy levels

• atomic mass

Positive or negative number that indicates how many electrons an atom has gained, lost, or shared to become stable

• oxidation number

• atomic mass

• atomic number

• valence electrons

atoms that have gained a charge because they have either lost or gained and electron

• ion

• isotope

• quark

• reactant

Atoms that have LOST two electrons will have a _____ charge.

• +2

• +1

• -2

• -1

Atoms that have GAINED one electron will have a _____ charge.

• -1

• -2

• +1

• +2

Atoms that have GAINED two electrons will have a _____ charge.

• -1

• -2

• +1

• +2

Atoms that have LOST one electron will have a _____ charge.

• +2

• +1

• -2

• -1

Compounds that are formed by the TRANSFER of electrons between atoms

• ionic compound

• covalent compound

• endothermic

• exothermic

Compounds that are formed by the SHARING of electrons between atoms

• ionic compound

• covalent compound

• endothermic

• exothermic