Atomic Structure

Region surrounding the nucleus where electrons are found.

• electron cloud
• electron
• proton
• nucleus

Positively charged center of an atom.

• neutron

• nucleus

• electron

• quark

Particles that differ in number between isotopes.

• protons
• neutrons
• electrons
• quarks

Vertical column in the periodic table.

• group
• period
• valence
• symbol

Positively charged particles in an atom.

• neutron
• proton
• electron
• quark

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

• neutron
• proton
• valence electrons
• quarks

Table that organizes the elements by properties.

• symbol table
• representative table
• table of elements
• periodic table

Atoms of the same element that have different masses.

• neutrons
• nucleus
• isotopes
• elements

Smallest known particle that makes up protons and neutrons.

• quarks
• protons
• neutrons
• electrons

All elements in the same one of these has the same number of energy levels in their electron cloud

• group
• period
• valence
• symbol