Atomic Theory Timeline Questions

Electrons are scattered around the nucleus at a distance.

There is a small, dense, positively charged nucleus.

Electrons move around the nucleus billions of times in one second.

"Atomos" means "not to be cut," which refers to the smallest piece of matter.

Energy levels are located certain distances from the nucleus

In which model are atoms imagined as the solar system?

Electrons are found in electron clouds, not in paths.

Who is "responsible" for the 2000-year "Death of Chemistry"?

What does "atom" mean?

In which model are atoms imagined as tiny balls or spheres?

What did Rutherford discover in his experiment?

There are small, negatively charged particles inside an atom called electrons.

Who proposed a model with electrons moving in specific layers?

Most of an atom's mass is in the nucleus.

Electrons travel in paths called energy levels.

Atoms contain mostly empty space.

Atoms are "uncuttable".

Atoms are made of a single material that is formed into different shapes and sizes.

All matter is made up of 4 elements: fire, air, water and earth

Atoms of the same element are exactly alike.

Rutherford's "gold-foil" experiment using alpha particle scattering concluded that -

This theory led to the "plum pudding" model, in which - particles are stuck in + charged subst.

Atoms of different elements are different.

Who discovered the electron?