Metals are the _____ reactive elements

The metalloid Silicon was discovered in ______
(Hint: during the 1800's)

Forms brittle ______

What is the name for group 2A?

The outer shell is known as the valence shell

Metals are on the ______ side of the periodic table

Metalloids are on the thick black _____

Have little if any _______ luster

There are _____ families

There are 108 known elements

There are ______ known metals

There are ______ known metaloids

Nonmetals readily gain _________

The elements placed in a ______ all have the same number of valence electrons

Mercury has the atomic number of 1

Lanthanides and ________ are inner transition metals

Has properties or metals and ________

There are ______ known nonmetals

Families 3-12 are called ______

The electrons on these shells are called valence electrons

_______ metals have different colored flames when burnt

Often make _____ semiconductors

Can be liquid, solid, or _____

Elements in the same______ have the same number of shells

The number of electrons in an atom's outermost valence shell governs its bonding behavior