PS.2 Level 2

How did the model of the atom change after the discovery of the electron?

• The atom was thought to be a solid sphere.

• The atom was thought to have a nucleus.

• The atom was thought to have a positive charge.

• The atom was thought to have a negative charge.

Tags

VA.PS.2.a

Which of the following elements is most likely to be a good conductor of electricity based on its position in the periodic table?

• Oxygen

• Silicon

• Copper

• Neon

Tags

VA.PS.2.b

According to the kinetic molecular theory, what happens to the particles of a gas when the temperature increases?

• The particles move slower.

• The particles move faster.

• The particles stop moving.

• The particles move in a straight line.

Tags

VA.PS.2.c

Which scientist is credited with the discovery of the electron?

• Niels Bohr

• J.J. Thomson

• Ernest Rutherford

• James Chadwick

Tags

VA.PS.2.a

What can be predicted about an element's reactivity based on its position in the periodic table?

• Elements in the same period have similar reactivity.

• Elements in the same group have similar reactivity.

• Elements in the same block have similar reactivity.

• Elements in the same row have similar reactivity.

Tags

VA.PS.2.b

How does the kinetic molecular theory explain the pressure exerted by gases?

• Pressure is due to the weight of the gas particles.

• Pressure is due to the collisions of gas particles with the walls of the container.

• Pressure is due to the attraction between gas particles.

• Pressure is due to the volume of the gas particles.

Tags

VA.PS.2.c

Which of the following statements best describes the development of the atomic model over time?

• The atomic model has remained unchanged since its inception.

• The atomic model has evolved as new discoveries were made.

• The atomic model was complete with the discovery of the electron.

• The atomic model was complete with the discovery of the neutron.

Tags

VA.PS.2.a

Which element is most likely to form a positive ion based on its position in the periodic table?

• Chlorine

• Sodium

• Argon

• Sulfur

Tags

VA.PS.2.b

What happens to the volume of a gas when the temperature is increased, assuming pressure is constant?

• The volume decreases.

• The volume increases.

• The volume remains the same.

• The volume becomes zero.

Tags

VA.PS.2.c

Which of the following best describes the role of neutrons in the atomic nucleus?

• Neutrons determine the chemical properties of an atom.

• Neutrons stabilize the nucleus by offsetting the repulsive forces between protons.

• Neutrons are responsible for the atom's charge.

• Neutrons determine the atom's mass.

Tags

VA.PS.2.a