Development Of The Atomic Theory

Question 1

The greek philosopher whom hypothesized that all matter is made up of small indivisible particles, he called these particles () - the greek word for indivisible. This theory was referred to as ()

Answer 1

Democritus
Atomos
Atomism

Question 2

The three scientist that provided more specific and detailed concepts of the atom

Answer 2

John Dalton
JJ Thomson
Ernest Rutherford

Question 3

A more precise description of the atom was presented by () in the year ()

Answer 3

John Dalton
1808

Question 4

Dalton imagined the atom to be very small and indivisible hence his ides was called the () of the atom

Answer 4

Solid Sphere Model

Question 5

An English Physicist, discovered the presence of small particles inside the atom, who is he?

Answer 5

Sir Joseph John Thomson

Question 6

The experiment sir JJ Thomson conducted

Answer 6

Cathode-ray tube experiment

Question 7

What did Sir JJ Thomson discover in his experiment

Answer 7

Eletrons

Question 8

In this model, an atom is presented as a uniform positively charged sphere embedded with electrons

Answer 8

Plum pudding model

Question 9

the plum pudding model of sir JJ Thomson was challenged when a physicist named () performed a () experiment, he shot fast moving () particles which came from positively charged helium nuclei

Answer 9

Ernest Rutherford
Gold Foil Experiment
Alpha particles

Question 10

In this model, all the positive charges are in a nucleus, with the electrons orbit around aroud it

Answer 10

Nuclear model