2-14 Unit 2 Test Atom and Periodic Table

An electron that is in the highest occupied energy level of an atom.

• Nucleus

• Isotopes

• Valence Electrons

• Nonmetals

Elements that form a bridge between the elements on the left and right side of the periodic table. Ability to FORM compounds with distinctive colors.

• Transition Metals

• Metals

• Alkali metals

• Halogens

A region of SPACE around the nucleus where an ELECTRONs are likely to be found.

• Isotopes

• Orbital

• Ground State

• Atomic Mass Unit

Equals the number of PROTONS in an atom of a element

• Mass number

• Neutron

• Electron Cloud

• Atomic Number

Each COLUMN in the periodic table (THERE ARE 18)

• Group

• Metals

• Nonmetals

• Mass Number

SEVEN valence Electrons (GROUP 17) PIC IS THE HINT!

• Alkali Metals

• Halogens

• Ground State

• Isotopes

A dense, positively charged mass located in the CENTER OF THE ATOM

• Nucleus

• Atom

• Electron

• Noble Gases

Elements with properties that fall between those of metals and nonmetals. Ability to conduct electricity varies depending on temperature. (Located along on the STAIR STEP LINE)

• Nonmetals

• Protons

• Orbital

• Metalloids

AMU stands for

• Automatic Mass Units

• Atoms Make Universes

• Atomic Mass Unit

• Atomic Matter Universe

A NEUTRAL subatomic Particle found in the nucleus

• Proton

• Electron

• Atom

• Neutron