Rutherford

Scientist Ernest Rutherford set up experiments to test

• Aristotle's atomic model

• Thomson’s atomic model

• Dalton’s atomic model

Rutherford expected the positive alpha particles to travel

• straight through the foil without changing direction

• straight through the glass without changing direction

• straight through the rock without changing direction

Rutherford concluded that most of an atom’s mass and positive charge is concentrated in a small area in the center of the atom called

• The weight

• The mass

• the nucleus.

the positive charge in the nucleus was made of positively charged particles called

• neutron

• electron

• protons

A proton is an atomic particle that has

• one positive charge (1+)

• one negative charge (1-)

• one neutral charge (1)

Negatively charged electrons move in

• the empty space in the nucleus.

• the empty space surrounding the nucleus.

• the empty space surrounding the earth.

Rutherford’s model contains

• a small, dense, negative nucleus

• a small, dense, neutral nucleus

• a small, dense, positive nucleus