CH 9 Atoms and the Periodic Table

A column or group on the periodic table is also called a

Electrons are located in the 

A _____ can be used to represent objects really big or really small

The center of an atom

Horizontal row on periodic table

Most of the nonmetals are ________ at room temperature

An element's position on the periodic table tells you its:

Metals found in group 1 are called

Mendeleev noticed a pattern when elements were in order of increasing

The _________ shows the number of protons in the nucleus

The deterioration of a metal due to a chemical reaction in the environment is called

Size and temperature determine the ______ of a star.

________ have some properties of metals and some properties of nonmetals

For an atom be neutral (zero charge) the number of electrons should equal the number of 

Elements in group 18 that do not ordinarily form compounds and are usually nonreactive:

A molecule made up of two atoms

Which is NOT a general property of metals

Positively charged particles in the nucleus

The family of elements that has an element important to the chemistry of life:

All of the following are chemical properties except:

Which category contains the most elements?

Elements in the same column in the periodic table have similar:

Mendeleev put the elements into groups based on similarities, this is called:

The outer planets are mainly made up of

___________ is a scientist who compared electrons orbit to planets orbiting the Sun

A material that can be drawn into long wires is considered

The most reactive metals are found in group number

Which of these is NOT a classification of metals

The most reactive metals in the periodic table

The elements in Group 3 through 12, that are less reactive than metals in groups 1 and 2: