chem quiz 2 - categorizing + history of atomic structure + history abt the nature of matter

what is dalton’s model named and what year was it created/made?

“Billiard Ball” - 1808

Dalton’s atomic theory consists of:

1. All elements are composed of atoms
2. Atoms of the same element are exactly alike
3. Each element is characterized by the mass of its atoms
4. Joining of atoms of two or more elements form compounds
5. Atoms are neither created nor destroyed in a chemical change

Dalton - (explanation)

* no subamotic particles
* solid indivisible sphere

what is thomson’s model named and what year was it created/made?

“Raisin Bun” or “Plum Pudding” - 1904

Thomson - (explanation)

* positive sphere
* electrons (-) embedded in the sphere - they have a small mass

what is rutherford’s model named and what year was it created/made?

“Electron Cloud” or “Nuclear” - 1911

Rutherford - (explanation)

* protons (+) in the nucleus
* electrons (-) traveling in the electron cloud
* knew there was another particle in the nucleus but it wasn’t named

what is bohr’s model named and what year was it created/made?

“Planetary” - 1913

Bohr - (explanation)

* protons (+) in nucleus
* electrons (-) traveled in circular orbits around nucleus
* neutral neutrons in the nucleus
* electrons (-) could jump orbits if they gained or lost the right amount of energy

what is quantum’s model named?

“Wave”

Quantum - (explanation)

* protons (+) in nucleus
* electrons (-) traveled in wavelike orbitals around nucleus
* neutral neutrons in the nucleus
* impossible to determine the exact location of an electron
* 4 sublevels of energy levels

The scientific revolution was linked to ____________

The industrial revolution

Empedocles four elements consist of:

* earth
* air
* water
* fire

Democritus - matter consists of ___________________________

particles that, at some point, could not be broken down further.

Aristotle supported ______________

Empedocles

Protons and neutrons together may be referred to as _________________

nucleons

________ was the first person to define an element as the final form that ____________________________

Lavoiser - could not be broken down further by chemical means/reactions

What does each type of element have its own type of?

Atom