Flashcard: Fundamentals of Atomic Structure — 10 carte

Atomic particles — basic units?

Protons, neutrons, and electrons form atoms.

Atom — definition?

Smallest unit of an element.

Historical atomic models — first?

Democritus' indivisible atom concept.

Proton — charge?

Positively charged subatomic particle.

Subatomic roles — proton?

Defines element and atomic number.

Neutron — role?

Contributes to atomic mass, stabilizes nucleus.

Electron — location?

Orbiting nucleus in electron clouds.

Atomic number — what?

Number of protons in an atom.

Mass number — equals?

Protons plus neutrons in nucleus.

Dalton's model — concept?

Atoms are indivisible solid spheres.