Unit 4: Periodic Table Vocab Flashcard

Front

Smallest particle of an element

Back

Atom

Front

Compound

Back

A combination of two or more elements.

Front

Element: A pure substance that CANNOT be broken down into simpler substances by chemical reactions.

Back

Front

Two or more atoms joined together is a molecule.

Back

True

Front

Combined mass of protons and neutrons in an atom

Back

Atomic Mass

Front

Electrons in the nucleus of an atom = atomic number

Back

False

Front

Abbreviation for an element or atom

Back

Atomic Symbol

Front

Reactivity

Back

The ease and speed with which an element combines or reacts with other elements and compounds.

Front

Vertical column in the periodic table

Back

Group

Front

Horizontal rows in the periodic table

Back

Group