8CMU: Chemistry Set [Part 1] - Atomic Structure

Front

matter

Back

Anything that has mass and takes up space

Front

element

Back

A substance that cannot be broken down into simpler substances and retain the same properties, made up of all the same type of atoms

Front

periodic table of elements

Back

A table that classifies elements by their physical and chemical properties; rows are called periods; columns are called groups

Front

atomic number

Back

The number of protons in the nucleus of an atom

Front

mass number

Back

The number of protons PLUS the number of neutrons in an atom; always a whole number (no decimal places)

Front

atom

Back

Smallest unit of an element that retains that element's properties

Front

subatomic particle

Back

Particles found inside the atom; mainly protons, neutrons, and electrons.

Front

nucleus

Back

Center of an atom; contains neutrons and protons

Front

proton

Back

A subatomic particle that has a positive charge and that is found in the nucleus of an atom

Front

neutron

Back

A subatomic particle that has no charge and that is found in the nucleus of an atom