Elements and the Periodic Table

What consists of 2 nonmetal atoms bonded together?

The reactivity of the metal elements generally increases as you move from left to right on the periodic table.

In the _______state of matter, electrons are stripped away from the nuclei.

An element's properties can be predicted from its

An element's _______ tells the number of protons in the nucleus.

The family of_______is the most reactive group of metals in the periodic table.

Helium nuclei and energy are the products of the nuclear fusion of the sun's hydrogen.

A mixture of metals is called

A(an) ________ has some of the properties of both metals and nonmetals

Which of the following in not a characteristic of most metals?

The halogen family is not a very reactive group.

From the left to the right of the periodic table, the elements are arranged in order of decreasing atomic mass.

Lanthanides and actinides are found at the bottom of the periodic table in order to keep the table a reasonable size.

The particles that are lost, gained, or shared in chemical reactions.

Dmitri Mendeleev created the first

If a substance is_____it can be pulled or drawn into a wire.

A(an) ______________is a positively charged particle in an atom"s nucleus.

The mass of a proton is about one atomic mass unit.

Nonmetals are good conductors of heat and electricity.

The sun and many other stars are made up mostly of the element