History

Question 1

First proposed theory of electrolytes

Answer 1

Svante ARRHENIUS

Question 2

Stated that equal volumes of all gases at the same temp and pressure contain the same number of molecules

Answer 2

Amadeo AVOGADRO

Question 3

Discovered the process of radioactivity; studied the phenomenon called phosphorescence

Answer 3

Henri BECQUEREL

Question 4

Proposed an atomic theory to account for the spectra of certain elements; pictured the atom as a miniature solar system

Answer 4

Neils BOHR

Question 5

Determined the relationship b/n volume of a gas and pressure exerted on it (temperature kept constant)

Answer 5

Robert BOYLE

Question 6

Discovered Hydrogen

Answer 6

Henry CAVENDISH

Question 7

Published works that establish the existence of neutron

Answer 7

James CHADWICK

Question 8

Determined the relationship of volume of gas and its temperature (pressure kept constant)

Answer 8

Jacques CHARLES

Question 9

Performed experiments to isolate radioactive components of mineral called PITCHBLENDE

Answer 9

Sklodowska and Pierre CURIE

Question 10

Proposed and developed the atomic theory w/c is the landmark of chemistry

Answer 10

John DALTON

Question 11

Proposed that electrons and other particles have wave properties; Showed that it is possible to assign a wavelength to a moving electron

Answer 11

Louis DE BROGLIE

Question 12

Proposed telluric screw, the first real classification of elements

Answer 12

DE CHANCOURTOIS

Question 13

Theory of Relativity and Law of conservation of mass and energy

Answer 13

Albert EINSTEIN

Question 14

Ran experiments on chemical electrolysis; discovered methods of liquefaction of gases

Answer 14

Michael FARADAY

Question 15

Discovered the proton

Answer 15

Eugene GOLDSTEIN

Question 16

Proposed Uncertainty Principle

Answer 16

Werner HEISENBERG

Question 17

First to introduce quantitative methods in the study of chemistry

Answer 17

Antoine LAVOISIER

Question 18

Father of the Periodic Table; classified elements acc. to their chemical properties

Answer 18

Dmitri MENDELEEV

Question 19

Classified elements acc. to their physical properties

Answer 19

Lothar MEYER

Question 20

Made the first precise measurement of the mass and charge of the electron

Answer 20

Robert MILLIKAN

Question 21

Discovered that nuclear charge controls the character and population of the electric energy levels w/c determine properties of elements

Answer 21

Henry MOSELEY

Question 22

Proposed law of Octaves

Answer 22

NEWLANDS

Question 23

Proposed the quantum theory of radiant energy; stated that radiant energy could be absorbed or given off only in definite quantities

Answer 23

Max PLANCK

Question 24

Discovered cathode rays by passing an electric current through a vacuum

Answer 24

Julius PLUCKER

Question 25

Performed the Gold Foil Expt w/c led to nucleus discovery; discovered the proton

Answer 25

Ernest RUTHERFORD

Question 26

Developed an equation that describes the electron in terms of its wave character w/c is the basis of wave mechanics

Answer 26

Erwin SCHRODINGER

Question 27

Suggested that cathode rays be called electrons

Answer 27

George STONEY

Question 28

Determined value of e/m for electron discovered in 1897

Answer 28

J.J. THOMSON

Question 29

Succeeded in overthrowing the vital force theory in synthesising urea (organic) from ammonium cyanate (inorganic)

Answer 29

Friedrich WOHLER

Question 30

believed that matter is continuous, hence, hypothetically can be divided into smaller particles.

Answer 30

Aristotle