History Of The Atom

Question 1

Leucippus and Democratis

Answer 1

1st
Atomos - indestructible
Atoms we’re solid, incompressible, and indescribable

Question 2

Alchemists

Answer 2

2nd
Invented scientific glassware

Question 3

Robert Boyle

Answer 3

3rd
First modern chemist
Experimentation and observation

Question 4

Lavoisier

Answer 4

4th
Father of modern chemistry
Oxidisation, combustion, and gasses
Conservation of mass
Named O2, H2, and C
First quantitative procedures in experimentation

Question 5

James Dalton

Answer 5

5th
Atoms are invisible
Atoms of a given element are identical in mass and properties
Compounds are combinations of 2 or more different types of atoms
Law of conservation of mass
Law of constant composition

Question 6

Dmitry Ivanovich Mendeleyev

Answer 6

7th
Periodic table
Developed a system of atomic weights of elements using Avogadro’s Theory

Question 7

Henri Becquerel

Answer 7

8th
Radioactivity, x-rays

Question 8

Marie and Pierre curie

Answer 8

9th
Radioactivity (Pierre)
Discovered radium and polonium (Marie)
Contributed to cancer treatment (Marie)

Question 9

JJ Thomson

Answer 9

10th
Cathode rays
First sub-atomic negatively charged particles (electrons)
Raison bun model

Question 10

Ernest Rutherford

Answer 10

11th
Gold foil experiment
Nucleus surrounded by empt space

Question 11

Neils Bohr

Answer 11

Electrons travel in separate orbitals

Question 12

Erwin Schrödinger

Answer 12

Used maths to design his models
Contributed to wave theory