GCSE Physics - Atomic Structure, Isotopes & Electrons Shells #32

This video tutorial covers the fundamental concepts of atomic structure, including the nucleus, protons, neutrons, and electrons. It explains how elements are represented in the periodic table, focusing on nuclear symbols, atomic numbers, and mass numbers. The video also delves into isotopes, their stability, and the process of radioactive decay. Additionally, it explores electron energy levels, how electrons can become excited, and the concept of ionization, where atoms become ions by losing electrons.

What is the charge of a neutron?

• Neutral

• Negative

• Positive

• Variable

What does the atomic number of an element represent?

• The number of protons

• The total mass of the atom

• The number of neutrons

• The number of electrons

How many neutrons does lithium-7 have?

• Five

• Four

• Seven

• Three

What is the process called when unstable isotopes emit radiation?

• Ionization

• Radioactive decay

• Nuclear fusion

• Electron excitation

What happens when an electron becomes excited?

• It becomes a proton

• It leaves the atom

• It moves to a higher energy level

• It moves to a lower energy level

What is ionization?

• The process of an electron leaving the atom

• The process of an electron moving to a higher energy level

• The process of a proton becoming a neutron

• The process of a neutron becoming a proton

What is ionizing radiation capable of doing?

• Increasing the mass of an atom

• Decreasing the energy level of electrons

• Knocking electrons off atoms

• Changing protons into neutrons