History Of Atoms

Question 1

Atomos

Answer 1

Not able to be divided

Question 2

Atom

Answer 2

The smallest particle into which an element can be divided.

Question 3

Dalton

Answer 3

All substances are made of atoms
Atoms of the same element are exactly alike
Atoms join with others to make new substances

Question 4

J.J. Thomson

Answer 4

Discovered there were small particles inside an atom.
Discovered electrons
Made the Plum Pudding Model where electrons are plums

Question 5

Rutherford

Answer 5

Discovered in his shooting gallery that the particles bounce rickshaw and deflected.
Discovered the nucleus.

Question 6

Bohr

Answer 6

Studied how they react to light.
Proposed that electrons move in certain paths or energy levels.
Rungs of a ladder.

Question 7

Werner Heisenberg and Erwin Schrödinger

Answer 7

Said that a path of an atom cannot be predicted

They are likely to be found in electron clouds.

Question 8

Democritis

Answer 8

Greek Philosopher
Believed if you cut something enough times you will end up with an atom
Thought they were small, hard and formed.