Nonmetals & Metalloids
This group of elements shares properties with both metals and nonmetals.
What are metalloids (or semi-metals)?
This scientist's work is the basis for the modern periodic table.
Who is Dmitri Mendeleev?
This is the outermost shell of electrons in an atom.
What is that valence shell?
These elements are often brittle, dull, and poor conductors of electricity.
What are nonmetals?
This groups contains the most radioactive elements.
What are Rare-Earth Metals?
Also known as the "rule of 8", an atom is most stable when its valence shell has 8 electrons.
What is the octet rule?
This is the least reactive group of elements on the periodic table.
What are the noble gases?
These neutrally charged particles are found in the nucleus.
What are neutrons?
These elements are part of the same vertical columnand possess similar chemical properties.
What is a Group or Family?
This is the most reactive group or family of metals on the periodic table.
What are the Alkali Metals?
In this kind of bond, electrons are free to move from atom to atom.
What is a Metallic Bond?
This is the most reactive group of nonmetals on the periodic table. (Hint: their name means "salt-formers").
What are Halogens?
This group of elements have high melting points, conduct electricity well, and are located between groups 3-12 on the periodic table.
What are the Transition Metals?
This kind of bond forms between a metal and a nonmetal.
What is Ionic Bonding?
This term refers to the fact that some metalloids can conduct electricity but only under certain conditions.
What is semiconductor?
This is the term for an atom of the same element that has different numbers of neutrons.
What is an isotope?
This is the number of protons and neutrons in an atom's nucleus.
What is Atomic Mass?
This kind of bond forms when two nonmetals share electrons.
What are Covalent Bonds?