20.5 Atom and Periodic Table Vocabulary

The mass on the periodic table.

• Average Atomic Mass

• Atomic Mass

• Isotope

• Neutron

Tags

NGSS.MS-PS1-5

Region surrounding the nucleus where electrons are found.

• Electron Cloud

• Neucleus

• Group

• Period

Positively charged center of an atom.

• Nucleus

• Proton

• Neutron

• Electron Cloud

Particles that differ in number between isotopes.

• Electrons

• Protons

• Neutrons

• Nucleus

Vertical column in the periodic table.

• Electron Cloud

• Protons

• Period

• Group

Positively charged subatomic particles in an atom.

• Nucleus

• Protons

• Neutrons

• Electrons

Negatively charged subatomic particles in an atom.

• Nucleus

• Protons

• Neutrons

• Electrons

Neutrally charged subatomic particles in an atom.

• Nucleus

• Protons

• Neutrons

• Electrons

Negatively charged particles in the outermost energy levels of the electron cloud.

• Valence Electrons

• Protons

• Neutrons

• Electrons

Table that organizes the elements by properties.

• Atomic Number

• Average Atomic Mass

• Periodic Table

• Period