Atom Structure and Behavior

These flashcards cover key concepts about atomic structure, electron arrangement, and scientific models based on the provided lecture notes.

Protons and neutrons are found in the of an atom.

nucleus

The nucleus of an atom has a charge because it contains protons.

positive

Electrons can change their arrangement by electromagnetic radiation.

absorbing

When an atom emits EM radiation, electrons move the nucleus.

closer to

The number of is equal to the number of electrons in a neutral atom.

protons

Atoms of the same element have the same number of .

protons

An isotope has a different number of but the same number of protons.

neutrons

Atoms become positive ions when they lose one or more of their electrons.

outer

A scientific model may change due to the discovery of new evidence.

experimental

The plum-pudding model describes the atom as a ball of charge.

positive

Before the discovery of the electron, it was believed that the atom was _.

indivisible

The conclusions of the Alpha-Scattering experiment state that most of the mass of the atom is concentrated at the .

center