Chem Com Unit 1-B Vocab Flashcard (Part B)

Front

Arrangement of elements by increasing atomic number, with similar properties in vertical columns.

Back

periodic table

Front

A positively charged particle in atomic nuclei, equal to atomic number.

Back

proton

Front

A particle with a negative charge surrounding atomic nuclei.

Back

electron

Front

A particle without charge in an atom's nucleus

Back

neutron

Front

Number of protons in an atom, distinguishing different elements.

Back

Atomic number

Front

Dense, positively charged center of an atom containing protons and neutrons

Back

nucleus

Front

Sum of protons & neutrons in an atom's nucleus of an isotope

Back

mass number

Front

Atom of the same element with different neutrons

Back

Isotope

Front

Horizontal row in periodic table

Back

period

Front

Regular patterns in chemical and physical properties of elements on the periodic table.

Back

Periodic relationship