Atomic Structure Vocabulary

The building blocks of matter

• Mass Number
• Atoms
• Nobel Gases
• Isotopes

Positively Charged Particle
Mass: 1 amu

• Proton
• Neuton
• Electron
• Isotope

Neutral Charged Particle
Mass: 1 Amu

• Proton
• Neutron
• Electron
• Isotope

Negatively charged Particle
Mass:  Almost Nothing

• Protons
• Neutrons
• Electrons
• Isotopes

The total number of Protons and Neutrons.

• Mass Number
• Atomic Number
• Matter
• Ion

Number of protons in an atom.

• Atomic Number
• Mass Number
• Isotope
• Valence electrons

Electrons in the outermost orbital.

• Protons
• Neutrons
• Valence Electrons
• Isotopes

Group on the periodic table that is naturally stable and does not react with other elements.

• Nobel Gases
• Alkali Metals
• Alkaline Earth Metals
• Halogens

Anything that has mass and takes up space

• isotope
• matter
• ion
• atomic number

Atoms of the same element but with different numbers of neutrons.

• Ion
• Isotope
• Mass Number
• electron