Take this Quiz: GCSE Physics: Atomic Structure | Zestly

Question 1

An atom has an atomic number of 11 and a mass number of 23. Which of the following correctly describes the composition of this atom?

Accepted Answer

11 protons, 11 electrons, 12 neutrons

Question 2

Which of the following statements accurately describe the differences between the plum pudding model and the nuclear model of the atom?

Accepted Answer

The plum pudding model suggests positive charge is spread throughout the atom, while the nuclear model concentrates it in the center.

Question 3

In the alpha particle scattering experiment, why were most alpha particles able to pass straight through the gold foil?

Accepted Answer

Because the atom is mostly empty space.

Question 4

Which of the following are true regarding isotopes of the same element?

Answer

They have the same number of protons.

Answer

They have the same number of neutrons.

Answer

They have different atomic numbers.

Answer

They have different mass numbers.

Question 5

When an electron in an atom moves from a higher energy level to a lower energy level, what happens?

Answer

It absorbs electromagnetic radiation.

Answer

It emits electromagnetic radiation.

Answer

It gains kinetic energy.

Answer

It changes into a proton.