6.1 The Atom

The nucleus is __ve charged
The electrons orbiting are __ve charged

+, -

R__’s experiment: a__ scattering
> provides e__ for the n__ model

Rutherford, alpha, evidence, nuclear

Rutherford’s experiment: evidence
A: the atom is mostly e__ space
> as most a__ particles went s__ through

empty, alpha, straight

Rutherford’s experiment: evidence
B: the n__ is __ve charged
> as some alpha particles were r__ (opps)
> since alpha particles are __ve, so is the nucleus

nucleus, +, repelled, +

Rutherford’s experiment: evidence
C: the n__ is d__
> as some alpha particles were d__ in the opp direction

nucleus, dense, deflected

A is the

mass #

Z is the

proton #

Name	Symbol	Relative mass	Relative charge
Proton	p	__	__
Neutron	n	__	__
Electron	e-	__	__

go row by row

1, +1, 1, 0, 1/1840, -1

Isotope

atoms of the same element w diff mass #