the smallest particle that still can be considered an element

• proton

• neutron

• electron

• atom

a series of models that developed from experimental evidence

• atomic law

• atomic theory

• elemental law

• elemental theory

Tags

NGSS.MS-PS1-1

negatively charged particles, discovered by Thomson

• proton

• neutron

• electron

Tags

NGSS.MS-PS2-3

the dense center of an atom

• proton

• nuetron

• nucleus

• election

a positively-charged particle in the atoms nucleus

• proton

• neutron

• electron

a particle with no charge in the nucleus of the atom

• proton

• neutron

• electron

the number of protons in the nucleus of an atom

• protons

• atomic number

• electron

• nucleus

average mass of all the isotopes of that element

• proton

• atomic mass

• electon

• nucleus

a chart showing all of the elements arranged according to their properties

• atomic mass

• proton

• neutron

• periodic table

a one or two letter abbreviation for the element

• chemical symbol

• atomic number

• atomic mass