Rutherford's Gold Foil Experiment NCEA Level 2

What is the structure of an atom according to Rutherford's model?

• Small, dense, positively charged nucleus with no electrons orbiting around it

• Small, dense, negatively charged nucleus with positively charged electrons orbiting around it

• Small, dense, positively charged nucleus with negatively charged electrons orbiting around it

• Large, empty nucleus with positively charged electrons orbiting around it

What is the nuclear model of the atom proposed by Rutherford?

• The nucleus is made up of electrons and protons

• The nucleus is spread out throughout the atom

• The nucleus is located on the surface of the atom

• Small, dense nucleus at the center of the atom

What are alpha particles?

• Negatively charged particles consisting of two electrons and two protons

• Particles with no charge consisting of four protons

• Neutral particles consisting of two neutrons and two electrons

• Positively charged particles consisting of two protons and two neutrons

Describe the setup of Rutherford's gold foil experiment.

• Shooting beta particles at a thick sheet of gold foil

• Observing the reflection of the particles

• Using gamma rays to penetrate the gold foil

• Shooting alpha particles at a thin sheet of gold foil and observing the deflection of the particles.

What were the observations made during the gold foil experiment?

• Most of the alpha particles passed through the foil, some were deflected at small angles, and a few were deflected at large angles or even bounced back.

• The alpha particles were completely absorbed by the foil

• The foil emitted a bright light when the alpha particles hit it

• All the alpha particles passed through the foil without any deflection

What conclusions were drawn from Rutherford's gold foil experiment?

• The gold foil experiment proved the existence of electrons

• Atoms have a small, dense, positively charged nucleus, and that most of the atom is empty space.

• The nucleus of an atom is negatively charged

• Atoms are made entirely of positively charged particles

How did Rutherford's experiment contribute to our understanding of the atomic structure?

• It showed that atoms are indivisible and indestructible

• It proved that electrons are located in the nucleus of an atom

• It demonstrated the existence of a small, dense nucleus at the center of an atom.

• It confirmed the existence of multiple nuclei within an atom

Explain the significance of the gold foil experiment in the history of atomic theory.

• The gold foil experiment proved that the atom is solid and indivisible, leading to the development of the solid sphere model of the atom.

• The gold foil experiment demonstrated that the atom is mostly empty space with a small, dense nucleus, leading to the development of the nuclear model of the atom.

• The gold foil experiment showed that the atom is made up of a mixture of positive and negative charges, leading to the development of the plum pudding model of the atom.

• The gold foil experiment confirmed that the atom is a continuous, uniform structure, leading to the development of the continuous model of the atom.

What did Rutherford's experiment reveal about the distribution of positive charge in an atom?

• Positive charge is located in the electron cloud

• Positive charge is only found in the outer shell of the atom

• Positive charge is evenly distributed throughout the atom

• Positive charge is concentrated in a small, dense nucleus

How did Rutherford's experiment disprove the plum pudding model of the atom?

• All the alpha particles were deflected at large angles, indicating that the atom is solid throughout.

• The alpha particles were absorbed by the gold foil, indicating that the atom is made of a uniform positive charge.

• Most of the alpha particles passed straight through the gold foil, indicating that the atom is mostly empty space with a small, dense nucleus.

• The alpha particles scattered in all directions, indicating that the atom is a mixture of positive and negative charges evenly distributed.