Atomic Model

Question 1

Order

Answer 1

Ancient Greeks, John dalton, Thompson, Rutherford, Henry, Rutherford, James, Bohr

Question 2

Ancient greeks

Answer 2

Matter is indivisible particles

Question 3

dalton

Answer 3

Atoms are solid spheres, made from different elements

Question 4

Thompson

Answer 4

Atoms not solid, and indivisible. Plum pudding model, positive change sphere, negetive embedded in it.

Question 5

Rutherford

Answer 5

Gold foil experiment, fired alpha to thin piece of gold, where alpha deflected, and some came back. Proved plum pudding was wrong. Made nuclear modèl, where positive is in middle, and surrounded by electrons.

Question 6

HENRY

Answer 6

Realised and proved Rutherford was wrong, as nucleus was heavy. Rutherford then discovered proton, which are specific to elements.

Question 7

James

Answer 7

Neutron in nucleus, which are neutral, and are relatively heavy.

Question 8

Bohr-4 principles

Answer 8

Electrons exist in fixed orbits
Shel has fixed energy
Electrons move-em emitted or absorbed.
Energy and radiation is fixed.

Question 9

Bohr

Answer 9

Also said why some element are inert, as they have a full outer shell .