1.2 Atomic structure

Question 1

john Dalton

Answer 1

atoms cant be divided
different elements have different atoms
atoms join to make new substance

Question 2

J.J Thomson

Answer 2

an atom is a positively charged sphere with electrons inside- plum pudding model
small particles inside atoms

Question 2

Rutherford

Answer 2

atoms were made up of a positive nucleus with negative electrons orbiting it
discovered proton

Question 3

Niels Bohr

Answer 3

electrons could be in shells around the nucleus

Question 4

Geiger and Marsden

Answer 4

Rutherford expirement
led to a theory of a nucleus inside of an atom

Question 5

describe the atoms

Answer 5

positively charged charged nucleus
radius is much smaller than that of an atom
most of the mass is in the nucleus